20. Let l be k(q). Solve -3*g = -2*z - 18, l = 5*z + 5*g - 3 for z.
-3
Let h(y) = -y**3 + 17*y**2 - 3*y + 54. Suppose -5*d = d - 102. Let u be h(d). Solve -5*x - 11 - 3 = u*i, 4*i = -5*x - 17 for i.
-3
Suppose 59 = -16*d + 219. Solve 4*b + i + 15 = 0, 0*i = 5*b + 3*i + d for b.
-5
Suppose 0 = -4*w - g + 5*g + 28, 19 = 3*w - 5*g. Suppose -w = v - 3*v. Solve -v - 4 = 4*x + m, 3*x + 5*m + 23 = 0 for x.
-1
Let f be ((-2)/(-6))/((153/108)/17). Solve 3*u + 3 = -5*h, 0*h + f = -4*u + 5*h for u.
-1
Let y(p) = 2*p**2 - 2. Let w be y(-2). Let b(s) = w + 12 - 17 + s. Let h be b(2). Solve h*k + 4*d = 4*k - 7, 3*d + 5 = k for k.
-1
Let p(v) = v + 4*v - 4*v + 6*v**2 + 7 + v**3 + 0. Let j be p(-5). Let i be 45/j + 2/6. Solve -15 = 5*o - 2*q, i*q = -o + q - 10 for o.
-5
Suppose -2*i - 109 = 5*j, 0*j = 3*i + 2*j + 136. Let p = i + 45. Solve u = 2*q - 9, -4*q - 10 + 3 = p*u for u.
-5
Suppose 35 = 2*q + q - 4*z, 7 = q + z. Suppose 6*k - q = 15. Solve 15 = -5*v + 5*w, -2*w = k*v - 9*v - 12 for v.
-2
Let v be (-3)/(-1 - 36/(-63)). Solve 0 = 2*d + 3*n - 13, -2*d + 7*d - n - v = 0 for d.
2
Let f = 24 - 26. Let o be 6 + (-6)/(0 + f). Solve -22 = -4*d + 5*l, 0*d + d - 3*l = o for d.
3
Suppose 2*d = 6*d - 428. Let f = d - 103. Solve 0 = 5*w + 5*t - 30, -t + f = 3*t for w.
5
Let b be (5/(-15))/(2/(-30)). Let d = 1318 + -1316. Let o = -1 - -3. Solve l - b*l - 11 = 5*h, o*l = d for h.
-3
Suppose 0 = -p + 2*f + 2, -p + 2 = 7*f - 3*f. Suppose 3*d = -p*d. Suppose -3*n + 11 = x, -x + 3 = -n + 2*x. Solve -n*u + q + 8 = u, d = 5*u + 3*q - 10 for u.
2
Let h = -1757 + 1757. Solve 0*m + 2*m - 3*u - 1 = h, -4*m - 3*u = 25 for m.
-4
Let s(p) = -4*p**3 + 63*p**2 + 8*p + 138. Let a be s(16). Suppose 2*r + 7 = 1. Let x be ((-4)/(-3))/((-1)/r). Solve n = 4*n + m - 10, -2*n - x*m = a for n.
5
Let b = 33 + -67. Let q = 37 + b. Suppose 2*a + 2*l = -l + 5, 5*a = q*l + 44. Solve -5*n = -4*h - 17, h - 3*n - 22 = -a*n for h.
2
Let a be 8*(-6)/48*-22. Solve p - 5 - 6 = 4*s, -a = 5*s - 4*p for s.
-2
Let v = -9 - -21. Suppose m - v = -82. Let l be 2/(-3) - m/15. Solve 0 = y - q + 7, l*y - q - 2 = 6*y for y.
-3
Let u(m) = 2*m + 2. Let t be u(-1). Solve t = -3*o + 4*q + 10, 3*o - 7*o - 3*q + 5 = 0 for o.
2
Let r(d) = d**2 + 24*d + 28. Let b be r(-23). Solve -2*x + 10 = -5*z, 17*x = -5*z + 20*x - b for z.
-4
Let n(q) = 2*q**2 - 2*q - 36. Let h be n(-4). Let k(p) = -p**3 - p**2 + 4*p. Let c be k(-3). Solve l - 3 = m, l - c = h*m - 0 for l.
2
Suppose -22*g = -16*g - 18. Solve 23 = -4*x - w, -3*x - 9 - g = -w for x.
-5
Suppose 4*y - 27 = -3*x, -5 = 2*x - 8*y + 3*y. Solve 1 = 2*q - b, 5*q - x*b + 2 = 7 for q.
0
Let o be -8 + 4 - 6/(-1). Solve -5*t = -o*a - t, 10 = -5*t for a.
-4
Suppose -2*z + 16 - 34 = -4*s, -5*s = 5*z. Solve -u - 2*u - 3*p = -s, 0 = -3*u + 3*p + 27 for u.
5
Let g = 20 + -13. Suppose -5*o = -2*o - 12. Suppose -5*l + o*i = -8 - 21, 5*i = -l. Solve x + l*u + g = 0, 3*x - 2*u = -7*u - 11 for x.
-2
Let h = -432 - -434. Solve 3*c + i = -c + 9, h*c + 4*i = 8 for c.
2
Let d(y) = -3*y**3 - 5*y**2 + 7*y - 2. Let b be d(-3). Solve -2*w + b - 3 = 0, -3*v = -2*w + 22 for v.
-4
Let w = 157 + -155. Solve -4*y = -2*n - w, 3*n - 27 = -0*n - 4*y for n.
5
Let d(u) = u**3 - 5*u**2 + 6*u - 3. Let y be ((-27)/(-5) - (-16)/(-40)) + -1. Let b be d(y). Solve b*g + 11 = 2*n, -3*n + 4 = -2*n - 2*g for n.
-2
Let h = 812 - 812. Solve -8*v + 4*v - 8 = h, -3*v = -5*z + 11 for z.
1
Suppose 0 = -15*q - 480 + 1200. Let w be q/(-360) + -31*(-2)/15. Solve w*g + 4*r = 0, r + 4 = 5*g + 5*r for g.
4
Suppose -3*p + 32 = 32. Solve 0 = 2*c + 4, 5*c + 10 = 2*g - p for g.
0
Let w = 218 - 214. Solve 2*y - 6 - 1 = -d, -y + w*d = 10 for y.
2
Suppose 6 - 3 = w. Suppose -3*s - 4*y + 7 = 0, 0 = -w*s + 5*y - y + 23. Solve 0 = -0*m - m + s*t - 4, 20 = -5*m - t for m.
-4
Let n be 0 + (4/(-14) - (-32)/112). Solve 4*r - 3*m + 11 = n, 2*r - 4*m + 3 = -r for r.
-5
Let b be (2/7)/((-3)/(-21)). Suppose 2*s - 4 = 3*l, -1 = b*l - 2*s + 3. Solve 0 = -4*h + 2*h + 2*x, l = -x + 4 for h.
4
Let k(o) = o**3 + 3*o**2 - 4*o + 2. Let j be k(-4). Suppose d + j = 12. Solve 0 = 4*a + 4*m + 36, 0 = m - 5 + d for a.
-4
Let j(p) = 5*p - 20. Let o be j(5). Solve -d - o*s = 27, 3*d - s - 3 = 2*d for d.
-2
Let n be (-1 + 6)*3/5. Suppose -3*m + 8 = o, -n*m + 0*m + 6 = 3*o. Let s be (3 - (3 - o))*0. Solve s = 2*w - 2*k + 16, -37 = w + 3*w - 5*k for w.
-3
Let u = 28 - 22. Let v(l) be the first derivative of -l**4/4 + 2*l**3 + 5*l + 1. Let k be v(u). Solve 2*o - 4*w + 19 - 3 = 0, -k*o = -w + 22 for o.
-4
Let h = 965 + -961. Solve -5*c + 6 = f, -f + h*c - 2 = 1 for f.
1
Suppose h - 23 = -57. Let n = -17 - h. Solve 5*y = 4*y + 3*a + n, 3*y - 5*a - 31 = 0 for y.
2
Let p(q) be the first derivative of -q**3/3 + 9*q**2 - 32*q + 40. Let m be p(16). Solve b = -m*b - 3*c + 1, -2*b + 4*c = -12 for b.
4
Let f = 89 - 24. Let g = f + -59. Let r be (-20)/6*(-6)/4. Solve 2*b = z + g*b - 24, 4*z - r*b = -9 for z.
4
Let q(x) = x + 5. Suppose w - 5*i + 60 = 6*w, -2*i + 75 = 5*w. Let s be 2/(-6)*(w - 2). Let u be q(s). Solve u = -5*v + 2*y - 5*y - 25, -4*v = 4*y + 20 for v.
-5
Let v = 477 - 474. Solve 0 = v*u - 8*u - 2*r - 29, -u + 1 = -3*r for u.
-5
Let c = 1026 - 1020. Solve 0*p = -4*p, -3*i + 4*p - c = 0 for i.
-2
Let n = -47 - -71. Let r be 1 - (3*20/(-12) + 3). Solve 4*k + 31 = -p - 4*p, r*k = -4*p - n for p.
-3
Suppose -3*a + 47 = 41. Solve 3*s + 6*i - a*i - 20 = 0, -5 = -5*s - i for s.
0
Suppose -5*x = -3*g - 2, 3*g - x = 2*x. Let q(t) = 3*t**3 - t**2 + 1. Let z be q(g). Solve s - b + 13 = z*s, 4*s - 21 = -b for s.
4
Let o be (-8)/3*(-30)/8. Suppose -n - 2*z + 32 = n, -3*n + 52 = 5*z. Let g = n - o. Solve -5*y - 1 = a, 0*a - g = 4*a - 2*y for a.
-1
Let f = 23 + -15. Let l be (0/(-1))/(-11 + f). Solve -r + 3 = l, -4*r = 4*z - 5*r - 1 for z.
1
Suppose 2*l - 2 = i, -i - 8 = 3*i. Let m = -10 + l. Let f = m + 10. Solve -4*h - 16 = -4*n + 2*n, f = -n - 5*h - 6 for n.
4
Suppose -8*d = -12*d - 48. Let l = 16 + d. Suppose 2*j + 3*r = 9, j + r - 3 = 2*j. Solve j = -l*u + o + 10 - 26, 20 = -5*u - o for u.
-4
Suppose 6*x - 2*x = -4. Let p be -3*(2/6 + 0 + x). Solve -3*i + o = -p*o - 9, 16 = -4*o for i.
-1
Let c be 7 + 188/(-36) + (-4)/(-18). Solve 2*u + 10 = 4*t, c*u + 8*t - 8 = 3*t for u.
-1
Suppose 2*t = 3*t + 5, -3*o - t = -40. Let z be 77/o - 2/15. Solve 4*k - 4*c = 0, c + c = 3*k + z for k.
-5
Let d = 286 + -266. Solve 5*y - 2*u - 18 = 0, 7*u = 4*y + 4*u - d for y.
2
Suppose -34*w + 702 = -7*w. Solve 3*p = 5*o - 31, 4*o = -2*p + 5*p + w for p.
-2
Let b be -5 + (-5 - -4) + 0. Let v(z) = z**3 + 8*z**2 + 11*z - 6. Let p be v(b). Solve -a + 6 = -5*k + a, -5*k + 5*a - 15 = p for k.
0
Suppose 0 = 5*x + 5*q - 12 - 13, -3*x + 4*q = 6. Solve 6 = x*g, -4*g + 15 = -0*a - a for a.
-3
Suppose 5*b - 9 = -t, -2*t + 4*b = 8*b - 12. Suppose 2*q + 53 = 5*m, -t*m + 0*m + 40 = -q. Solve -2*w + 3*w + 3*n + m = 0, -5*n = -2*w + 15 for w.
0
Let i = -11 + 16. Let b = -50 - 5. Let c = -51 - b. Solve 0 = c*a + 3*u + 1 + 2, 30 = -5*a + i*u for a.
-3
Let l be ((-6)/2)/((-12)/44). Solve -3*u + 0 = 5*r + l, 3*u = -r + 5 for u.
3
Suppose 0 = 2*a + 9*a - 22. Suppose 3*m + a*m + 3*f = 4, -5*f = m + 8. Solve 15 = -5*p - m*y, -23 = 5*p - 2*p + 4*y for p.
-1
Suppose -305*n + 306*n = 4. Solve -4*f + v + v = 6, 5*v + 13 = -n*f for f.
-2
Suppose 0 = -76*a + 60 + 92. Solve -a*u - 4*p = -u - 1, -14 = -3*u - p for u.
5
Let p = -1137 + 1139. Solve -p*f - 6 = -4*n, 0 = -f + 3*n + 5 - 7 for f.
-5
Let x be -4 + 10*(-6)/4. Let a = x - -51. Solve -a = 4*q + 5*t, 2*q + 4*t + 18 = t for q.
-3
Let x be (-15)/(-3) - (3 + -2). Let z be (-2 - (-2)/x)*-2. Solve -9 = -z*u, 5*w + 2*u + 9 = -0*u for w.
-3
Let w be (4 - 2)*-1 - -11. Let n = 0 + 2. Let i be n/(18/(-15))*-3. Solve 3*r = i*l + 5, -l + w - 28 = 3*r for l.
-4
Let j(i) = i**3 - 7*i**2 + 4. Let w be j(7). Let h(d) = -3 - w + 2*d - d. Let x be h(9). Solve -3*z + 2 = c, -4*c - z = x - 10 for c.
2
Let j(d) = -6*d**2 - 66*d + 6. Let v be j(-11). Solve -2*b = -n + v, -2*b - 11 = 3*n + 11 for n.
-4
Let i be (-1)/(-3)*(2 - -1). Let c(p) = 2 + 0*p + p - i. Let l be c(2). Solve 5*n + 42 - 12 = 5*q, 0 = -l*q - 4*n - 10 for q.
2
Let b = -12 - -13. Let v be ((-45)/12)/(6/(-64)). Let s be (3/(-2))/((-30)/v). Solve g = 3*g + 6, s*g + b = -i for i.
5
Let y(w) = w + 2. Let o be y(1). Let n = 3