Solve -o + 21 = c + 4*o, c - 3*o + 11 = 0 for c.

1

Solve -2*x + 3*h + 9 = 0, 29*h = 34*h + 15 for x.

0

Solve -15*v + 11*v + 5*u = -27, -4*v - 3 = 5*u for v.

3

Solve -4*y = 3*q - 7*q + 28, -q - 2 = 2*y for q.

4

Solve -2*d + 3*k + 9 = 0, k + 17 = 5*d - k for d.

3

Solve -3*c = z + 15, -111*z + 18 = -4*c - 112*z for c.

-3

Solve 0 = y + 3*p + 14, 5*y - 5*p + 13 = 3 for y.

-5

Solve -3*g = 5*y - 17, -9 = -y + 2*g - 3 for y.

4

Solve -5*s + 9 = -7*r + 3*r, -2*s - 3 = 5*r for s.

1

Solve -g = g + 4*u + 8, 3*u = 3*g + 12 for g.

-4