Solve -2*o - 2*b = -4, 0 = 4*o + b - 4 - 1 for o.

1

Solve -4*v + 4*t + 12 = 0, t - 12 = 4*v - 6*v for v.

5

Solve -3*y - 20 = -5*c, 4*c - c + 7 = -2*y for y.

-5

Solve 21 = 2*s - 3*v, 5*v + 13 = s + 3*v for s.

3

Solve -4*u = 0, 3*u + 0*u + 6 = 3*n for n.

2

Solve 0 = -7*b - t + 22, 2*b + 14 = t + 19 for b.

3

Solve 0 = 4*d + y - 1, 2*d + 1 = y - 0*y for d.

0

Solve 3*v + 21 = -3*x, -3*x + 8*v - 3*v + 19 = 0 for x.

-2

Solve 0 = -0*u + 3*u - 2*k - 14, 2*k = -5*u + 2 for u.

2

Solve -5*b - 15 = y, -15 = -0*y - 3*y + 5*b for y.

0