Solve 0 = -y - 3*u + 20, 6*y + u - 20 = 3*y for y.

5

Solve 3*y + 2*i = -12, -16 = 18*y - 14*y + i for y.

-4

Solve 0 = 5*o - 3*l + 2, -5*l = 4*o - 7*l + 2 for o.

-1

Solve 0 = l + 2*k - 5*k + 10, -5*l - 4*k + 7 = 0 for l.

-1

Solve -5*o - 28*v + 31*v - 40 = 0, -o - 15 = -2*v for o.

-5

Solve -3*f - h + 1 = -2*h, h - 1 = f for f.

1

Solve -s = -3*b + b, b = -5*s + 11 for b.

1

Solve 0*p = 5*y - 2*p + 29, y + 11 = 3*p for y.

-5

Solve 4*r - 3*v - 1 = 0, -2*r + 7 = -r - 3*v for r.

-2

Solve 0 = 3*r + 3*x, -4*r + 7*r + 16 = x for r.

-4