Solve 3*m = 27, 4*c + 6*m + 13 = 75 for c.

2

Solve -4*q + 18 = -2*t, 7*q - 2*q = -4*t + 16 for q.

4

Solve -2*s = 6, 0 = 4*x - 5*s + 12 - 35 for x.

2

Solve 0 = -2*u - 5*x + 5, -235 = 5*u + x - 213 for u.

-5

Solve -4*a + 3 = 2*g + 7, 2*g = -2*a + 2 for a.

-3

Solve -2*r + z = 3*z - 12, 4*r + z - 21 = 0 for r.

5

Solve -3*q + 3*k = -3, 0*q + 4*k + 4 = -2*q for q.

0

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

3

Solve y = 4*x - 3, 10*x - 8*x - 4*y = 12 for x.

0

Solve -3*y = j + 12, -9 = 8*j - 5*j for y.

-3