Solve y - 5 = -a, -4*a + 1 = 3*y - 15 for y.

4

Solve -2*q = -c - 5, -2*c + q - 5*q + 30 = 0 for c.

5

Solve c - 6 = -b - b, 3*b + c = 7 for b.

1

Solve 20 - 51 = -3*v - 4*u, -3*v - 3*u + 27 = 0 for v.

5

Solve 4*m - 8 = 2*y - 0*y, -y = -4*m + 6 for m.

1

Solve 3 = g, -g = -4*l - 29 + 30 for l.

1

Solve -25*b + 21*b = -12, -b + 13 = -2*i for i.

-5

Solve -3*b + 21 = 5*r - 8, 3 = b for r.

4

Solve -2*b - h = -8, -2*b - 5*h - 20 = -7*b for b.

4

Solve 4*w - 8 = 4*q - 0, -4*q = 2*w + 20 for q.

-4