Solve 10 = 2*s, s = 5*v + 6*s - 5 for v.

-4

Solve 2*o = -4*n - 20, 10*n + o = 7*n - 16 for n.

-6

Solve -h - 4*d = 2*h + 7, -2*d - 8 = 0 for h.

3

Solve 3*o + 15 = 5*d, 2*o + d = o + 3 for o.

0

Solve 3*b - 1 + 7 = 0, -4*u - 18 = 3*b for u.

-3

Solve 4*l = -5*p - 2 - 30, -p + 11 = -5*l for p.

-4

Solve 2*u = -2*k - 10, 2*k + u = 6*k + 5 for k.

-2

Solve -5*s + 3*s - 10 = -2*v, 0 = -3*v + 2*s + 12 for v.

2

Solve -5*k + 12 = 4*n, -3*n + 2*n - 14 = -3*k for n.

-2

Solve 0 = -4*p, -18*d + 13*d - p + 15 = 0 for d.

3