Let u be (-144)/(-81) - 2/(-9). Solve -b = u - 0 for b.

-2

Let t = -13 + 7. Let b(u) = -u - 1. Let p be b(t). Suppose -5*i + 5*l = -5, 0 = 2*i - i - p*l + 19. Solve i*r - 2*r = -8 for r.

-2

Suppose 3*a - 4*c = -9*c + 391, -2*c + 658 = 5*a. Suppose u - 74 = 3*j - 4*u, -5*j - a = -4*u. Let m be (-30)/(-7) + 8/j. Solve -k = k + m for k.

-2

Let h = -86 - -91. Let f = 1 + -1. Suppose -h = -f*z - z. Solve 4*j + j = z for j.

1

Let n be (-3 - -1)*3/(-2). Suppose -4*f + c + 2 = -f, -n = -3*c. Let w be -4 - -5 - (0 - f). Solve -o = -w*o + 1 for o.

1

Let f = 28 - 12. Let w = f - 12. Solve -5 = -3*j + w for j.

3

Suppose -a - 5 = -2*a + 5*m, 5*a - m = -71. Let k = -3 - a. Suppose 4*c = -l + k, 26 = 3*c + 4*l + l. Solve c = 5*f - 13 for f.

3

Suppose 0 = v - 2 + 7. Let u(p) = -p3 - 5*p2 - p - 5. Let f be u(v). Solve 0 = -x + 4 - f for x.

4

Suppose 0 = -6*b + 2*b + 20, -5*t = b - 25. Solve 0 = -t*f + 1 - 5 for f.

-1

Let h = -9 - -13. Suppose h*u = -b - 3, b + 2*u + 2 = -u. Let j = b + 8. Solve -3*p + 0*p = j for p.

-3