 15. Let f be 2/5 - (-39)/y. Solve -2*o - 2 = -4*q - 12, -f*q = -4*o for o.
-3
Let s(m) be the second derivative of m**5/20 - m**4/4 + m**3/6 + m**2/2 - 3*m. Let h be s(3). Solve -i = 5*p + 12, i - 2 = -h*p + 6*i for p.
-2
Let y be (-398)/(-12) - (-1)/(-6). Let g = y + -55. Let m = g - -33. Solve 2*k - 3 = 5*l + m, 3*k - 5*l - 16 = 0 for k.
2
Suppose 5*m + 3 - 18 = -5*p, 0 = m + 2. Let b be (-2)/(4/(-54)) + -1. Suppose p*q + 11 - b = 0. Solve 4*o - t = q*t, 0 = 2*o - 5*t - 15 for o.
-5
Suppose 0 = 3*d - s + 19, -7*d - 57 = -3*d + 5*s. Let u be d/(-4) + 3 - 1. Solve 10 = u*l - r, 3*r - 2 = -8 for l.
2
Let w be 17 + -13 + 2/(-2). Solve -w*l + 4 = -0*l + o, -4*l - o = -5 for l.
1
Suppose 0 = 5*h - 23 + 3. Let n = 4 + -2. Suppose n*m + 10 - 18 = 0. Solve m*p - 4*t = -24, -9 + h = -t for p.
-1
Let f(r) = 6*r + 13. Let l be f(0). Solve 4*m + 2*z - 1 = l, -2*z + 10 = 3*m for m.
4
Let q(w) = w**2 - 9*w + 11. Let u be q(8). Solve 4*z + a + u*a - 8 = 0, 9 = 5*z + 4*a for z.
1
Let l = -32 - -37. Solve 5*i = -r + 2*r + 27, -i - 5*r - l = 0 for i.
5
Suppose 0 = 5*u - 4*j - 7 - 21, -4*u + 35 = j. Solve 4*l + 7 = 5*n - u, -4*n + 12 = -2*l for n.
3
Let p = 8 + -8. Solve -4*h + 5*t + 6 = -p*t, 2*t - 20 = -4*h for h.
4
Suppose 5*v + 2*t - 30 = 0, 4*t - 3*t - 6 = -v. Let i be (4/v)/(8/84). Let u be (1/3)/((-1)/(-15)). Solve 0 = u*o - q + 2 + i, 5*o = -5*q + 15 for o.
-1
Let g(q) = 5*q**2 + 2*q - 1. Let l be g(1). Let u = l - 4. Let o = 9 + -7. Solve -u*r = 4*z - 2*z, 4 = o*z - 2*r for z.
1
Suppose -2 = -x - k, -x = -0*x + 4*k + 7. Let s = -2 - -4. Suppose 7 = x*w + s. Solve 2*g = o - 2, -2*g + 3*g + 5*o + w = 0 for g.
-1
Let r = 26 + -22. Solve 2*c - r*h = -6, -4*c - 3*h - 1 = -0*c for c.
-1
Suppose 0 = 4*z + 3*d - 20, -2*z + d = -2*d + 8. Let r be 44/6 + z/(-6). Let w be 12/r + (-2)/(-7). Solve -3*s - 5 = 2*m - w*s, 0 = -2*m + 3*s - 17 for m.
-4
Let c be (14/(-35))/((-1)/115). Let n(x) = x**3 - 9*x**2 + 10*x. Let t be n(7). Let m = t + c. Solve -5*k - 4*l + 0*l - 21 = 0, 4*k + 2*l + m = 0 for k.
-5
Let i be -3 - -8 - (-6)/(-3). Solve 2*c = i*c - 4*r - 9, -8 = -4*c + 2*r for c.
1
Let w(b) = 2*b**2 - 4*b - 1. Let d be w(3). Suppose 0*r = d*r - 20. Solve r*z + 3*u + 28 = 0, u - 5 + 25 = -4*z for z.
-4
Let b(i) = -31*i. Let n be b(-1). Solve 2*x = -4*p + 20, -3*x = -7*x - 5*p + n for x.
4
Let y be (14/(-35))/((-2)/200). Solve 0*n + 3*g = 3*n, 5*g - y = -3*n for n.
5
Let b be 1/3*(2 - -10). Suppose -o + b*o = 0. Solve o = -a + 5*n - 19, -4*a + 5*a = -3*n + 13 for a.
1
Let f = -10 + 14. Solve -f = -3*j - 2*z + 3, 3*j + 1 = -4*z for j.
5
Let c(l) = -l**2 - 8*l - 7. Let f be c(-7). Suppose -5*w = 3 + 7. Let g = w + 2. Solve -y - 3 = b - f*y, 4*b - 2*y + 6 = g for b.
-2
Let c be (6 - -2)*(-2)/4. Let g = 1 - c. Solve 0*y + 30 = g*n + 5*y, 2*n = -5*y + 24 for n.
2
Let c be -2*-2*(-3)/6. Let l = c + 4. Let v = l - 0. Solve 3*o + 21 = -2*r + 5*r, o + v*r - 8 = 0 for o.
-2
Let q be -4 - (2 + (3 - 13)). Solve 14 = q*o + 2*f, -2 = -3*o + f + 1 for o.
2
Suppose 5*i = -r - 6, -2*r + 2*i = r + 1. Let l = 3 + r. Solve -9 = 5*k + l*b, -b - 6 = -2*k - 5*b for k.
-3
Let n(h) = 8*h. Let i be n(-1). Let x = i + 11. Solve 3*b + w = -b + 12, -4*b - 4 = -x*w for b.
2
Suppose -5 = -u - 3*o, -o - 4*o = -5. Solve 0 = -2*x - u*m + 6, 0 = 2*x - 3*m + m + 14 for x.
-2
Let b = -2 + 13. Let p be (9 - b)/(4/(-6)). Suppose 5*k - 26 = -6. Solve 5 = h + k*h, -l = 3*h - p for l.
0
Let j(g) = g**3 + 12*g**2 + 19*g - 5. Let h be j(-10). Solve -r + 6*r + h*u - 10 = 0, -2*r - 16 = -2*u for r.
-3
Suppose i - 3*i - 2 = 0. Let o be (-5 + 5)/(i + -1). Solve 3*c - 4*q - 6 - 1 = o, -5*q = 5 for c.
1
Let k = 26 - 23. Solve 2*b - 6*b + 5*i - 10 = 0, -5*b + 6 = k*i for b.
0
Suppose 0*f - 2*f + w = 0, -3*f + w = -2. Solve f*k - k - 2*m = 0, -3*k + 5 = -m for k.
2
Suppose -5*k - 17 = 8. Let y(g) = g**2 + g - 5. Let u be y(-6). Let f be -2*(u/2)/k. Solve t + 0 = -w - 1, 3*w + f*t = 1 for w.
-3
Let y(a) = 2*a**2 + a + 1. Let z be y(-1). Suppose 0 = 4*p, 3*k - 2 = 2*k + p. Solve 5*r - z*r + d - 4 = 0, k*r - 21 = 3*d for r.
3
Let a = -11 - -11. Suppose -4*s - 2 = 3*t - 4, s - 2*t - 6 = a. Solve -4*x + 15 = x - s*b, -2*x - b = -15 for x.
5
Suppose -8 = -2*i - 4. Suppose 4*r = -5*f - i, 0 = r + 5*f + 8. Solve -l - r*x = 3*l + 14, -8 = l - 4*x for l.
-4
Suppose 0 = d + 2*r - 0*r, 3*r = d. Solve -3*b - 1 = 5*f, d = 4*f + 4*b - 3*b + 5 for f.
-2
Let a be -7*(100/(-28) - -3). Solve 2*b = 5*d - a, -5*d = 5*b - 0*b - 25 for d.
2
Let v be (-1)/2 - (-22)/4. Let l be v/2 + 1/(-2). Let g(q) = -3*q**3 - 4*q**2 - 4*q - 2. Let u be g(-2). Solve 5*d = -2*a - 16, -2*a = a - l*d - u for a.
2
Suppose -t - 1 = -5. Solve -x + 6*g + 26 = g, t*g = 4*x - 24 for x.
1
Suppose -c = -y + 3*y - 5, 0 = -3*y - 3*c + 12. Solve -2*d - 11 = -4*d - q, d - 4*q = y for d.
5
Suppose -3*h = 2*h. Let v be (12 - -4) + -1 + h. Let x be 6/21 + (-24)/(-14). Solve -3*p = l + v, p + 4*l = x*p - 8 for p.
-4
Let n(a) = a**2 + 3*a - 3. Let z be n(-4). Suppose -x = -z - 1. Suppose -q + x*q + 1 = -o, -4*q = 3*o + 7. Solve -o*b - 8 = -4*c, 3 - 1 = -2*b + c for b.
0
Suppose 0*y - y - 28 = -5*u, 4*y + 7 = -u. Solve 0 = -3*j + 4*k - 17, -2*k - 6 = u*j + 5 for j.
-3
Let x(q) = -2*q**2 - q. Let w be x(1). Let h(s) = 5*s. Let j be h(1). Let f = w + j. Solve -l + 15 = 5*p, 0*l - 18 = -2*p + f*l for p.
4
Let x be 10 + -6 - (2 + -2). Solve -y + 19 = -x*j, 2*y = 5*j + 16 + 7 for y.
-1
Let z be (-8)/10*(-20)/8. Suppose 0 = 3*r + 3*x - 7 - 5, -3*x + 6 = r. Solve r*w - z*w + 2*p = -2, 0 = -w - 4*p - 6 for w.
2
Let q be -25 + 4 - (-2 - 2). Let s = q - -39. Let t = -8 + 12. Solve 5*l - s + t = 3*u, -2 = -2*l - 4*u for l.
3
Suppose -v - 3 = -3*v - t, 12 = -4*t. Solve 3*l = -0*l - 2*o - 4, 3 = v*o for l.
-2
Let q(h) = h + 6. Let a = 11 + -8. Let y(k) = k + 7. Let x(f) = a*y(f) - 2*q(f). Let m be x(-9). Solve 0 = 2*d + 5*p - 28, 3*d + 2*d - 4*p - 4 = m for d.
4
Let u be 42/28 + (-6)/(-4). Suppose -5*v = -u*g + 1 - 24, 3 = v + g. Solve -2*o - 8 = -4*o - 4*m, 0 = -v*o - 2*m + 16 for o.
4
Suppose 3*a = -2*n - 3, -3 = -n + a + 3. Solve -4*f = -5*g - 9, 7*f = g + n*f - 11 for g.
-5
Let t = 26 - 14. Solve -5*h + d = 10 + 4, 3*d = -3*h - t for h.
-3
Let v(r) = r + 6. Let f be v(0). Suppose -d = -f*d. Solve 3*x + m + 7 = d, 3*x + 4*m + 17 = 5*m for x.
-4
Let a be 0*5/20*2. Solve a*s = 3*s - 12, -2*z + 2*s - 2 = 0 for z.
3
Let y be (1 - (-1 - -7)) + 2. Let o = y + 7. Suppose 5*l = o*k + 92, 16 = -3*l - 3*k + 82. Solve -s + 4*f + f = 22, 2*s - 4*f = -l for s.
-2
Let p = -2 - -16. Let i = p + -7. Solve i*c - 3*c + 4 = 0, 4*t + 2*c = 2 for t.
1
Let d be (12/(-3))/(-2) + -14. Let j = 18 + d. Let y = j + -3. Solve -4*r - 5*l = 15, 0 = 2*l + y*l - 5 for r.
-5
Let v = -3 + 8. Suppose 0 = -3*x + 5*x + p, 0 = -2*x + v*p. Let z = 1 + 3. Solve -2*m = 5*s - z, -s + 4*m - 8 = -x*m for s.
0
Let k = -22 + 26. Solve k*j = -4*x + 40, -5*x + 34 = 2*j - 1 for j.
5
Suppose -3*k + 2*i - 58 = 0, 62 = -3*k - 2*i + 6*i. Let t = -10 - k. Solve v = -m + 5*v + 3, -t = 4*v for m.
-5
Suppose -3*f = -32 - 31. Suppose 0*y = y + i - f, 5*i + 45 = y. Solve 0 = 5*o - h - h + y, 28 = -o + 5*h for o.
-3
Let n(o) = o**2 + 8*o + 14. Let z be n(-7). Let i be (-1 - -1) + -3 + 1. Let b be i*(0 - 10/4). Solve 5*l + z = f, -b = l - 3*f + 2 for l.
-1
Suppose 3*o - 2*o = 0. Let p be 5/3*3 + o. Suppose p = -5*j + 20. Solve -5*m - 4*b = -0 - 7, -j*m - 12 = -3*b for m.
-1
Let b(j) = 25*j**3 - 2*j**2 + 1. Let y be b(1). Suppose -w + k + 0*k = -y, -4*w + 3*k = -91. Solve 27 = 3*p + 3*x, -w = -p - 3*x - 0*x for p.
4
Let z = 16 - 9. Solve -m - 2*a + 5 = 0, -z*m = -2*m - 3*a + 1 for m.
1
Let y be (5 - 2)*(-2 + 3). Let p = 0 + 4. Suppose 2*d - p = -0. Solve v = -4, d*v + 12 = -y*k - 8 for k.
-4
Let z = -34 + 39. Solve -4*y - 5*v = z, 3*v = 5*y - 2*v - 50 for y.
5
Let o(w) = w**3 + 2*w**2 - 5*w - 5. Let j be o(-2). Suppose m = u, 5*u - 3*m = 3 + 7. Solve c - y + 1 = -2*y, -u*c - j = -y for c.
-1
Let t be (-8)/12 + (-2)/(-3). Suppose -2*c + 3*m + 29 = -t*c, 0 = -4*m - 20. Suppose 3*k - c*k = -28. Solve 0 = -2*y - 3*j - 4 + k, -4*y - 2*j = 6 for y.
-3
Let y(f) = f**2 - 7*f + 3. Let k be y(7). Let c(j) = -j**3 - 9*j**2 - 9*j - 5. Let a be c(-8). Solve -k*r = -4*x + 7, -a*x + 5*r + 10 = 2*x for x.
1
Suppose 0 = 4*l + 5*j - 33, 0 = -3*l + 2*j - 7*j + 