Solve b + 5 = 2*s - 4, 3*s - 21 = 3*b for s.

2

Solve -v - 6 = 3*l + 8, -4*v - l = 23 for v.

-5

Solve -21 = -3*l - 5*x, 0 = -2*l + 3*x - 4*x for l.

-3

Solve 4*w + 29 = -4*i + 25, 0 = 5*w - i - 19 for w.

3

Solve -18 = 2*k - 4*s, -6*s + 2*s + 20 = 0 for k.

1

Solve 5*q = -r, -3*r + 491 - 477 = q for r.

5

Solve -2*c - 13 = -k - 0*c, -4*k + 5*c + 40 = 0 for k.

5

Solve -14 - 2 = -5*x - 4*k, -2*x = 2*k - 8 for x.

0

Solve -5*f + 3*w = -6, 0 = 5*f - w - 3*w - 3 for f.

3

Solve 4*l - 8 = -5*m, -20*l + 24*l - 2*m = 8 for l.

2