Suppose 0 = -2*x - 2*x. Solve -15 + x = 3*a for a.

Suppose 2*b - 4*b + 8 = 0. Solve f = b*f for f.

0

Let r(u) be the second derivative of -u⁵⁄₂₀ + u⁴⁄₄ + 5*u³⁄₆ + u2 - 2*u. Let b be r(4). Solve b*n + 20 = n for n.

-4

Let k be ⁷⁄₅ + 4/(-10). Solve 9 = -5*g - k for g.

-2

Let c be ((-10)/6)/(7/(-21)). Solve 0 = -5*f - c for f.

-1

Let w be 64(-10)/(-20). Solve 0 = 3*u + u - w for u.

3

Let b be -48*((-1)/2 + 0). Suppose 5*n - l + 0*l - b = 0, l = -n + 6. Solve 0 = -5*q - 0 - n for q.

-1

Let l = 23 - 11. Solve l = -4*t + t for t.

-4

Let x(s) = 7 + 5 + 3 + 0*s - s. Let w be x(11). Solve 5 = w*g - 3 for g.

2

Suppose 0 = 3*m + 4*n - 3*n - 19, 1 = 2*m + 3*n. Solve -m = u + u for u.

-4

Let r = 4 - 2. Suppose -r*c + 3*p + 15 = 2*c, -2*c = -2*p - 10. Solve 0 = j - c*j + 3 for j.

-3