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

-5

Solve -3*f - 28*o - 7 = -32*o, 5*f - 3 = 3*o for f.

3

Solve f = t - 1, 4*f = -28 + 24 for t.

0

Solve -3*p + 2*g - 16 = -7*p, 4*g - 17 = -3*p for p.

3

Solve 2*c + 2 = -i + 14, 3*i = 3*c for i.

4

Solve 0 = -r - 4*p + 3 + 15, -5*r - 2*p = -18 for r.

2

Solve -5*b - 15 = 5*c, -3*c + 5*b + 1 - 2 = 0 for c.

-2

Solve -3*g - 25 = -4*f, 3*f - 4*g = -0 + 17 for f.

7

Solve 2*n + 2*c + 5 = 17, 0 = -3*n + 2*c - 2 for n.

2

Solve o + 5 = -k, -4 = -3*o + 3*k - 1 for o.

-2