Solve -4*x + 6*x = -6, 0 = -5*a - 4*x + 8 for a.

4

Solve 2*r + 15 = 5*c, 3*r = -3*c - 12 - 0 for c.

1

Solve -27*w + 31*w + 6 = 2*f, 2*w + 3*f = 17 for w.

1

Solve -3*b - 29 = 4*f, 0 = -5*b + 2*f + f for b.

-3

Solve q = 4*v, v = -4*q + 6*v for q.

0

Solve 3*w + 15 = 0, -2*w + 3*w = 3*k + 4 for k.

-3

Solve -y + 20 = -5*a, 23*y + a + 20 = 20*y for y.

-5

Solve 2*y = -b + 4, -178*b + 4 = 2*y - 176*b for y.

2

Solve 4*l + 1 = -3*v, 26*v - 6 = 3*l + 30*v for l.

2

Solve 0 = -q - 3*v + 5, 4*v - 1 = -q + 7 for q.

-4