Solve 2*h + 1 = -5*s + 21, -2*h - 4*s + 18 = 0 for h.

5

Solve 0 = -2*r + 4, 0*h + 10 = 3*h + 5*r for h.

0

Solve 2*l - 9*y + 11*y + 12 = 0, 2*y = 4*l + 12 for l.

-4

Solve 2*c + 3*z = 14, 4*c + 3*z - 15 = c for c.

1

Solve 5*f - 7 = 3*z + 3*f, 0 = 3*z + f + 1 for z.

-1

Solve 2*u + b = 3*b, 3*b + 10 = 5*u for u.

5

Solve 10*l = -3*x + 7*l + 30, -2*x = l - 15 for x.

5

Solve -15 = -o - 4*g, -2*o - 10 = -5*g + 3*g for o.

-1

Solve -2*w + 155*u + 15 = 152*u, -2*w - 4*u = 6 for w.

3

Solve 3*j + 5*a + 7 = 0, -4*j - 5*a + a = 4 for j.

1