21 - 1. Let t be 4/c + (-2)/(-5). Let b be (-6)/(-51) + (-98)/(-34). Solve 0 = -3*u - f - t + 1, -f = u - b for u.
-1
Let y be (-2)/(-4*(-2)/(-12)). Solve -4*q = -y*t - 3, 4*t = -5*q - 41 + 6 for q.
-3
Suppose 0 = -2*x + 11 - 3. Suppose x*l - 13 = 5*p, -5*l + 6 = 3*p - 1. Solve 4*d + 2*i + 14 = 0, -l*i + 12 = -2*d - 4*i for d.
-1
Let t = -10 - -18. Solve 0*c - 2*c - t = 5*s, 2*s = -2*c - 8 for c.
-4
Suppose -40 = -k + x, -2*k + 4*x = -6*k + 176. Suppose k = 3*p - 3*a, 0 = 3*a - 17 + 5. Solve 0*y + y + 4*j + 9 = 0, 5*y = j + p for y.
3
Let o = -15 - -15. Solve -2*z = -o*z + 2*h - 14, -2*z = -5*h for z.
5
Suppose -4*t + 19 = 3. Suppose -3 + 19 = t*s. Let z = -6 - -11. Solve -z*l - s*v - 26 = -0, 4 = -4*l + v for l.
-2
Suppose 5*p = 11*p - 24. Solve -p*c + r = -13, -r - 2*r = c - 13 for c.
4
Suppose 0 = 2*m - 4*y - y + 19, 8 = m + y. Suppose 2*b - u - 14 = 0, -5*b + 4*u = m*u - 29. Solve 0*p - p = -b*f + 11, 2*p = 8 for f.
3
Let o(d) = -d**2 + 11*d. Let m be (1 - -7)/(-2 + 1). Let t be (0 - m) + (-1 - -3). Let h be o(t). Solve 2*s - 4*p + h = 0, s = -0*p - 3*p for s.
-3
Let r be -34*(-2)/4*1. Let w = 21 - r. Solve w*h - 3*h = -2*o + 9, -5*o + 24 = 4*h for h.
1
Let v = 16 + -13. Solve -v*j - 21 = -2*q, 4*q - 24 = 3*j + q for j.
-5
Let z = -3 - -7. Let m(y) = y**2 - 4 - 3 + 3 + 6*y. Let x be m(-7). Solve 3*o + 8 = -s, 0 = 6*o - x*o + 2*s + z for o.
-4
Let j(f) = 3*f - 4. Let h be j(-4). Let k = 24 + h. Solve -v + k = -2*l, v + 0*l - 6 = l for v.
4
Let p(o) = -o**3 - o**2 - 2*o + 3. Let j(w) = -w**2. Let a(x) = 4*j(x) - p(x). Let k be a(3). Solve 10 = y + b + 1, k*b = -2*y + 23 for y.
4
Let q = 8 + -4. Suppose -2*i = -3*v + 6*v - q, i - 4 = -2*v. Solve -4*m - 8 = 4*d - 6*m, 3*m - v = 4*d for d.
-4
Let z(m) = -m**2 + 7*m - 9. Let u be z(6). Let n(g) = 2*g**3 - g. Let l be n(-1). Let q = l - u. Solve -5*d - 23 = q*a, -4*a - 4*d - 31 = d for a.
-4
Suppose 3 = m - p, 0 = 3*p - 0*p + 3. Let r be 0/(m*(-2)/(-4)). Let o(i) = -i + 32. Let b be o(27). Solve -b*z = 4*y - y - 25, 4*y + z - 22 = r for y.
5
Suppose -5 = 7*a - 19. Suppose 5*q + 2*v - 112 = -38, -a*v - 70 = -4*q. Solve -3*t = j - q, -4*t = 1 - 21 for j.
1
Let l = 0 - -3. Suppose -5*z + 84 = 2*q + q, 5*q + 64 = l*z. Solve 3*k - z = -4*g - 2*k, -4*k + 10 = g for g.
2
Let i = -9 + 3. Let u be (i/9)/(2/(-6)). Solve -12 = r - 3*j, u*r + 3*j - 2 = 1 for r.
-3
Suppose 0 = 5*g - x - 17, 0*g = g - x - 5. Solve 0 = p + 4*k - 12, 0 = 3*p + g*k - 18 - 0 for p.
4
Let h(b) = b + 2. Let y be h(-7). Let w = 9 + y. Solve 2*z = -2*a + 14, w*z + 12 = -a + 5*a for a.
5
Suppose 0 = -3*y - 2*d - 10, -3*y + 5*d + 19 + 6 = 0. Suppose 0 - 4 = 2*g. Let u = y - g. Solve 3*r + u*s - 5 = -2*s, s - 14 = -5*r for r.
3
Let t(g) be the second derivative of -g**4/12 + 7*g**3/6 - g**2/2 - 3*g. Let i be t(6). Solve 0 = 3*d - i*y + 20, 0*d + 2*d = -2*y + 8 for d.
0
Let z(w) be the first derivative of w**4/4 - 7*w**3/3 + 7*w**2/2 - 3*w + 1. Let h be z(6). Solve 4*x + 3*b - 19 = -2*b, -3*x + 2*b = h for x.
1
Let p(s) = -3*s + 6. Let n be p(-8). Suppose 4*b - n = b. Suppose -4*m = 4*v, -2*m + 4*m = 3*v + b. Solve -4*a = m*t + a - 7, 22 = -4*t + 2*a for t.
-4
Let f = -165 + 169. Solve 5*m = 9*t - f*t + 45, -4*m = -t - 21 for m.
4
Suppose 3 = 2*x + 27. Let d(k) = k**2 - 2*k - 8. Let z be d(4). Let q = z - x. Solve 0 = y + 4*r + 2 - 12, 0 = 4*r - q for y.
-2
Suppose 3*k = 5 + 1. Let q be (k - 8 - 0) + 2. Let s(n) = -n**3 - 3*n**2 + 3*n. Let i be s(q). Solve 5*x + l = -14 - 5, 16 = -i*l for x.
-3
Let i be (-18)/27 - 34/(-6). Let s = -1 + i. Let c be -2*1 + (-4)/(-1). Solve -4*n = -s, -5*n = 3*b - c - 9 for b.
2
Let u(f) = 13*f + 4. Let w be u(1). Solve -2*a - 5*p - w = a, 0 = 2*p + 2 for a.
-4
Let l = -1 - -3. Let k be l/7 - 60/(-35). Solve -3*m = -k*d + 3 - 13, 3*m = 5*d + 16 for m.
2
Let y = -13 + 14. Solve -3*r - 2*s = y, 0*s - 4 = -s for r.
-3
Let a(s) be the third derivative of 0*s - 1/8*s**4 - 3*s**2 + 0 + 0*s**3. Let j be a(-2). Solve j*g - 3*g - 5 = 2*l, -5*l + 30 = g for l.
5
Suppose -3 = 2*h + 7, -2*h - 65 = -5*d. Let o be 0 + 1 + -5 + 8. Suppose -5*a + 4 = r, -2*a + 16 = 3*a + o*r. Solve a = -5*b - w, 3*b = -b - 3*w + d for b.
-1
Suppose k - 6 = 2*k. Let c(a) = -a**3 - 6*a**2 + 2. Let m be c(-6). Let t be m/(-2*3/k). Solve -t*q = 3*i + 8, 4*i + 10 = -q - 2*q for i.
-4
Let c(s) = -5*s**3 - s**2 + 2. Let d be c(-1). Solve 7*g + v - d = 4*g, 0 = 5*g + 2*v - 10 for g.
2
Let u(l) = -l**3 - 3*l**2 - 4*l - 2. Let r be u(-3). Solve 5*q - 2*j + 12 = q, q - 4*j = -r for q.
-2
Suppose -6*c + s + 13 = -3*c, c + 5*s = 15. Suppose 0 = -0*l + c*l. Solve 2*p - 2*b + 16 = l, -2*p - 2*p - 5*b + 13 = 0 for p.
-3
Let c = -5 + 8. Suppose 4*z + c*b = 112, -2*z + b + 56 = -4*b. Suppose -5*i - 8 - 7 = 0, -i = -5*t + z. Solve -3 = -o - t*n, 5*o - n = -5 + 20 for o.
3
Let u(j) = j**3 - 7*j**2 + 2. Let f(q) = q**2 - 2*q - 1. Let v be f(-2). Let i be u(v). Solve 5*l + 3*s - i*s = 9, 17 = -3*l + 5*s for l.
1
Let b = 6 + -4. Suppose b*t = -3*t. Suppose 5 = 5*n - t*n. Solve -p + 0 = 5*j - n, -3*p = 3*j - 3 for j.
0
Let b be (-3)/((-3)/2) + 1. Suppose -4*p + 1 = -3. Suppose b*q - 10 = -p. Solve -4*j = -4*m - 20, -10 = m - q*m - 3*j for m.
-1
Let a = -19 - -22. Suppose -a*l - 5*g = -20, 4 - 3 = g. Solve -4*q + 26 = 2*k, l*k + 4*q = 30 + 5 for k.
3
Let s be 1/((-2)/(-8)) - -1. Let p = 4 + -2. Let i = 48 - 44. Solve -4*x = s*c - i, p*x + 1 - 5 = -3*c for c.
4
Suppose -2*k + 8 = 2*k. Let m = 261 + -255. Solve 0 = -m*j + k*j + 4*l - 24, -l + 7 = -2*j for j.
-1
Let i = 10 + -11. Let p be -2 - 4/i*1. Solve -5*t = -5*n + 35, 4*n - 22 = p*t - 2 for t.
-4
Let p be 1/(-3) - 20/(-6). Solve p*f - 2*f = 2*z, 3*z - 3*f = 0 for z.
0
Let b = -17 + 10. Let f(r) = -r**3 - 7*r**2 - 2*r + 8. Let j be f(b). Let h = -8 - -11. Solve h*w + 5*z + j = -8, -4*w = -4*z + 8 for w.
-5
Suppose 0 = n - 2*j + 3*j + 3, -n - 3*j - 13 = 0. Solve 2*a = -q - 8, 2*q = 5*a - q - n for a.
-2
Let c(l) = l**3 - l**2 + l - 90. Let k be c(0). Let s be (1/3)/((-6)/k). Solve -s*y = 7*a - 2*a, -3*y = -5*a + 8 for a.
1
Let w be (-3 - -3) + (-16)/(-4). Solve d + 36 = w*s - 3*d, -3*d + 8 = 4*s for s.
5
Let y be 5*2 - (-12)/(-4). Suppose 0 = 4*b - 37 - y. Solve -2*u = -3*r - 3 - b, -8 = 2*r for u.
1
Suppose 4*h - 24 = -3*g + g, 3*h - 5*g = 18. Let p = 14 + -13. Suppose -c + h = p. Solve 5*l = v - 19, -c*v + 0*v = 4*l + 21 for v.
-1
Let k(z) = 2*z**3 + 4*z**2 + 2*z + 4. Let w be k(-2). Solve 2*s - 3*g + 5 = 0, 4*g + w*g - 5 = 3*s for s.
5
Suppose -2*t + 3*t = 10. Suppose 4*h = -w + 11, -3*w + 5*h + 7 = 4*h. Let k(a) = a. Let y be k(0). Solve 4*f + 16 = 0, -t = 2*j + w*f - y for j.
1
Let q = 0 + 9. Suppose 0 = -5*n + q*n - 24. Solve 5 = n*b - 5*b + 4*d, -2*d = 2*b - 10 for b.
5
Let d(u) = -u**3 - 3*u**2 + 2*u. Let y be d(-4). Suppose y*w - 39 - 1 = 0. Solve 5*x + w*f = -35, 0*f - 4*f = 12 for x.
-4
Let d = 11 - 7. Suppose 2*h - h - 4*c = 0, 0 = d*h + 3*c. Solve 0 = 5*r + 5*t + 1 + 9, h = 3*r + 2*t + 2 for r.
2
Let o(p) = p**3 + 6*p**2 - 2*p - 8. Let j be o(-6). Let y(i) = i**2 - 2. Let l be y(j). Solve 4*s + 2*v - 4*v - l = 0, 0 = 2*s - 4*v - 22 for s.
1
Let f(i) = 11*i**2 + i - 3. Let n be f(-2). Suppose 5*t + 5*a + 4 = n, -3*t + 5*a - 3 = 0. Solve 3*l - 2*l - 3*y - 5 = 0, 0 = -t*l - 4*y - 12 for l.
-1
Suppose 0 = 34*f - 32*f - 8. Solve 0 = -m - 4*n - 12, -3 - 9 = f*m + 4*n for m.
0
Suppose 0 = 3*m - 2*y - 14 + 1, 4*y - 30 = -2*m. Solve 5*n + 3*f = m, 5*n - 5*f + 13 = -12 for n.
-1
Let r(j) = j**2 + 3*j + 1. Let o be r(-2). Suppose 0 = 4*w + 3*q - 46, 2*q - 28 = -2*w - 2*q. Let v = w - o. Solve 2*u + 2*g = v + 1, -19 = -4*u - 3*g for u.
1
Let g be (-4)/6*(-405)/5. Let m be g/10 - 30/75. Solve 2*i - i - 2*f + 11 = 0, m*i + 5*f + 10 = 0 for i.
-5
Suppose 4*d + 5*i = 7, -3*i + 6*i = 5*d - 18. Let m = 5 - d. Solve -m*y - t = -3*t - 18, -y + 4*t = -24 for y.
4
Let h be (1 + -1)*(-28)/(-56). Solve h*m - y = -5*m - 13, -5*m - 5*y = -5 for m.
-2
Let h(u) = u**2 - 6*u + 4. Let r be h(0). Let o = -1 + 6. Solve -4*y + r*k - 5*k = -6, -13 = -o*y - 4*k for y.
1
Let h = 4 + -2. Suppose f - 13 = 2*z - 2*f, 2*f = -3*z. Let n = z + 5. Solve 0 = 2*v + j - 5, -h = n*v - 2*v - 4*j for v.
2
Suppose 8 = -o - 9. Let q = 22 + o. Solve i + 3 - 4 = -2*y, -4*y - i + q = 0 for y.
2
Let k(w) = -w**3 + 3*w**2 - 2. Let y be k(2). Let u(j) 