Solve -3*h - 4*w = -21, 12 = 20*h - 15*h - w for h.

3

Solve -2*q - 4 = 4, 0 = -4*f + q + 8 for f.

1

Solve -4*r + 12 = -3*h, 4*r + 6 = -3*h + 6*r for h.

0

Solve h - q = 0, -28*h = -33*h + 2*q + 9 for h.

3

Solve -z + 11 + 0 = 3*s, -2*s = -10 for z.

-4

Solve -c - 9*l = -41, -4*l = c + 14 - 30 for c.

-4

Solve -2*u + 4*u = 3*x - 9, 3*x = -3*u - 6 for u.

-3

Solve 3*p + b - 14 = 0, 9*p = 8*p - b + 8 for p.

3

Solve -4*l + 5*j = -7, 3*j - 4 + 16 = 5*l for l.

3

Solve -7*b + 6*b + 5 = -a, 4 = -2*a for b.

3