Solve -2*h + 0 = -r + 2, -4*h - 4*r - 4 = 0 for h.

-1

Solve 2*g = -3*s + 15, 7 + 13 = -2*g + 4*s for g.

0

Solve -c + 3*f = 0, -3*c + 5*f - 1 + 5 = 0 for c.

3

Solve 0*c + 4 = -u - c, 2*c + 8 = 2*u for u.

0

Solve -3*a + 4*f = -27, 19*f - 7 = -2*a + 18*f for a.

5

Solve -3*x = -2*u - 4*x + 11, -2*x = 5*u - 27 for u.

5

Solve 2*s = 10, -12*b - 2*s + 34 = -20*b for b.

-3

Solve y + 2*m = -y - 8, y - 4*m = 21 for y.

1

Solve -x = -4*q + 21, 0 = -2*x - 5 + 11 for q.

6

Solve 7 = -4*m + 3*t, -m + 6*m + t = 15 for m.

2