Solve -4*y + f - 21 = 0, y + 2*y + 5*f = 13 for y.

-4

Solve 0 = 4*p + 4, -z + 0*z - 6 = p for z.

-5

Solve 2*b + 2*p - 2 = -6, 1 = b + 2*p for b.

-5

Solve -x - 4*x + 14 = -g, -3*g = -2*x + 16 for x.

2

Solve 8 = -2*m, u = -u - 3*m - 20 for u.

-4

Solve 5*x = -4*t - 41, 5*x + 17 = -8 for t.

-4

Solve 2*x - 3*n = -8, -7*x + 4*x - 4*n - 12 = 0 for x.

-4

Solve 5*u + 3 = o, -u + 7 = -3*o + 16 for o.

3

Solve 5*h - 2*n = -34 + 10, h = -5*n + 6 for h.

-4

Solve 4*f + 6 = -3*x, -4*f + 4 = -7*f - 2*x for f.

0