Solve 0 = 5*r + 3*i - 15, 0*i + 4*i = 2*r + 20 for r.

0

Solve -3*w + c = 20, c - 15 = -w - 3*c for w.

-5

Solve 4*y + 4 = 2*i, 7*i - 9*i + 5 = -5*y for y.

-1

Solve -z + m + 11 = 3*z, -5*z + 14 = -m for z.

3

Solve 11*l - 6*l - 15 = -2*i, 0 = -5*l + 3*i + 40 for l.

5

Solve z + 5 = 5*d, -5 = 3*z - 4*d - d for z.

0

Solve -h - 8 = 4*i + 13, 0 = 3*i - 5*h - 13 for i.

-4

Solve 4*w = -2*v - 2*v, 0 = -5*v + 3*w - 24 for v.

-3

Solve 4*s = -1 - 15, -20 = 2*b + 5*s for b.

0

Solve -h - k - 6 = 2, 0 = -2*h - k - 11 for h.

-3