Let a(s) = -s**2 + 5*s + 6. Let h = -10 - -5. Let v = 10 + h. Let w be a(v). Solve 5*t = -9 - w for t.

Let s = -3 - -6. Solve 0*m = m - s for m.

3

Let a(z) = 4 - 5 + z + 5. Let k be a(6). Suppose -r = -0*r - k. Solve -30 = 5*i - r for i.

-4

Let f be (-12)/20 + ⁷²⁄₂₀. Solve 0 = f*x - 1 + 16 for x.

-5

Suppose -c - c = -10. Suppose 0 = 5*p - 2*w - w - 3, 3*p - c = 5*w. Solve -3*r - 15 = -p*r for r.

-5

Suppose -a = -3*a. Let b = a + 2. Solve d = -d + b for d.

1

Suppose -3*k = 4*n - 22, 0 = 5*n - 2*n + 2*k - 16. Suppose -n*v + 9*v = 4*q + 10, 3*v - 6 = 0. Solve q = y + 3*y - 16 for y.

4

Suppose -4*s = 8 - 24. Suppose -4 = f + w, s*f + 3*w = -f - 12. Solve 0*c + 2*c + 8 = f for c.

-4

Let j(a) be the first derivative of a⁴⁄₄ - a³⁄₃ - 7. Let n be j(2). Solve 0 = -n*f + 18 - 2 for f.

4

Let k(x) = -x + 19. Let m be k(10). Solve -4*r = m + 7 for r.

-4

Suppose 0 = -2*x + 4*x + 12. Let z be (4/x)/((-1)/3). Let v be 2 + z + (-1 - 0). Solve 16 = -v*f + 7*f for f.

4