Solve 0 = -3*v + 4*s + 19, -20 = -4*v - 2*s + 6*s for v.

1

Solve -2 = -5*a + 2*n, 2*a - 3*a + 2*n = 6 for a.

2

Solve 5*o + 38*n + 5 = 40*n, -30 = 5*o + 3*n for o.

-3

Solve 4*o = -z + 13, -3*o + 20 + 7 = -5*z for o.

4

Solve 4*l - 5*w = 6, -2*l + l + 2 = -w for l.

4

Solve -42*c + 47*c + 2*m - 16 = 0, -5*m + 19 = 2*c for c.

2

Solve -3*h = 2*h + u - 15, 0 = 4*h + 5*u - 12 for h.

3

Solve 4 = -a, 10 = 5*k - 2*a - 13 for k.

3

Solve 0 = 2*p - 2, 0 = -5*b + 8*p - 3*p + 20 for b.

5

Solve 7*p + 3 = -4*s + 8*p, 4*s + 7 = -3*p for s.

-1