Solve 6 = 2*h + 4*t, 4*h + 9 = -h - 2*t for h.

-3

Solve -1 = -k - 2*h, -5*k + 0*h + 15 = 5*h for k.

5

Solve r + 0*r - 15 = 5*x, -5*r = x + 29 for x.

-4

Solve -3*x - 2*o - 14 = 0, 5*x - 41 = -5*o - 66 for x.

-4

Solve g + 11 = 5*n + 5*g, n - g = 4 for n.

3

Solve -5 = -3*s + 2*h, -5*s + 9 = 2*h + 6 for s.

1

Solve 3*o + 3*h + h - 4 = 0, 3*o + 20 = 2*h for o.

-4

Solve 12*r - 9*r + 1 = -5*h, r + h - 1 = 0 for r.

3

Solve 5*w - 4*v - 5 = 2, -v = w - 5 for w.

3

Solve -s + 2*s - l = -6, s = 4*l - 21 for s.

-1