Solve f - 12 = -2*r + 5*f, f + 3 = -2*r for r.

0

Solve 3*j = s + 7*j - 22, -4*s + 18 = 2*j for s.

2

Solve 3*t = 5*x - 35, 2*x + 2*t = 5 - 7 for x.

4

Solve 0 = 3*d, 10*c - 2*d + 16 = 12*c for c.

8

Solve 8 + 12 = -4*h, -h - 30 = -5*s for s.

5

Solve -4*y + 2*d + 2 = 0, -2*y + 14 = 3*d + 17 for y.

0

Solve 5*c + o = 3 - 18, -2*c - 4*o + 12 = 0 for c.

-4

Solve m + 2*o = 0, 4*m - 3*o - 13 = -m for m.

2

Solve -4*o + 2*z + 2*z = 0, -2*o = 5*z for o.

0

Solve -4*d + 2*g = 20, d + 2*g + 5 = -3*g for d.

-5