Solve -2*r - 4*f = -104 + 122, 2*r - 2*f = 0 for r.

-3

Solve -2*y + 3*c = 0, -5*y + y = -3*c - 6 for y.

3

Solve -10 + 3 = -p - 2*j, 3 = j for p.

1

Solve 18 = 3*v - 3*k, -2*v + k - 43 = -49 for v.

0

Solve 5*w - 2*t = 11 - 32, 0 = 3*w - 2*t + 19 for w.

-1

Solve -2*f - 8 = -4*w, 15*w - 17*w = 4*f - 14 for w.

3

Solve 0 = -2*v + 3*w - 12, 2*w = -2*v + 6*w - 16 for v.

0

Solve x + 3*r = -13, 2*x + 2*r + 1 = -9 for x.

-1

Solve 0 = -2*i - 2, -9*i + 13*i = -a - 1 for a.

3

Solve 3*v = -4*f - 23, -4*v - 30 = 13*f - 8*f for f.

-2