Solve 0 = 2*r - u + 5, -12*r - 1 = -11*r + u for r.

-2

Solve o + 3*l + 13 = 3, 0 = 3*o - 3*l - 18 for o.

2

Solve 0*s = -5*s + 5*n, 4 = -s + 2*n for s.

4

Solve -1 = -5*n - 4*u, n - 3*u = 4 - 0 for n.

1

Solve r + 2 = -s, 4*s + 3*r - 55 = -64 for s.

-3

Solve b - 2 = -u, 5*u + 34 = 2*b + 44 for b.

0

Solve 5*h + 4*b = -15, 24 = -1706*h + 1710*h - 4*b for h.

1

Solve 6*t - t + 6 = i, -t = 4*i - 3 for t.

-1

Solve 3*b - 3*c = -21, -4*b + 3*c - 24 = -0*b for b.

-3

Solve 3*b - 19 = -2*v + 3*v, b - 13 = 2*v for v.

-4