Solve 4*w - 8*x + 5*x = -31, 25 = 5*x for w.

-4

Solve 0 = z - 4*y - 10, -z + 131*y - 126*y = -12 for z.

2

Solve 0 = 2*p + 3*u - 14, 4 = -p - u + 9 for p.

1

Solve 3 = -4*l - 2*v - 15, -4*l - 4*v = 24 for l.

-3

Solve -4*f + 20 = 72*c - 76*c, -2*c = f + 10 for c.

-5

Solve -2*j = -7*n + 10*n - 21, 0 = -n + 5 for j.

3

Solve 23*p + 9 = -4*i + 26*p, -5*i + 5*p = 15 for i.

0

Solve 3*m + 9*x - 4*x + 30 = 0, 5*m = -3*x - 34 for m.

-5

Solve 9 = -3*z, 0 = -2*c - 4*z - 6 + 4 for c.

5

Solve -9 = 2*l + 2*n - 19, 0 = 2*l + n - 9 for l.

4