Solve -4*n + 20 = 3*b, -2*b - 15*n + 15 = -12*n for b.

0

Solve 0 = 4*c + x - 1, c + 4*x + 0*x = 19 for c.

-1

Solve -2*i + 4*w + 24 = 0, -7*i + 2*i - 4*w + 4 = 0 for i.

4

Solve 0 = -2*s - 4*v + 12, 1 + 4 = s + v for s.

4

Solve 3*d - 3*h = 6*d - 30, -3*d + 10 = -h for d.

5

Solve 0 = 16*o - 14*o + 2*u - 6, 5*o - 15 = -2*u for o.

3

Solve -2*a - 4*d = -9*d - 11, -a = 5*d + 17 for a.

-2

Solve -5*v - 3*b - 21 = 0, -73*b = 5*v - 77*b + 7 for v.

-3

Solve 11 = 5*u - 9, 0 = -2*w - 2*u for w.

-4

Solve -2*d + o - 1 = 0, 0 = -3*d + 4*o + 57 - 56 for d.

-1