Solve -7*r + w = -2*r - 23, -w = 2*r - 5 for r.

4

Solve 5*x = -2*y + 25, 4*x + 5*y - 28 = 3*x for x.

3

Solve -2*s + 27 = -2*y + 7*y, -s + 26 = 5*y for s.

1

Solve -z = -12*y + 9*y + 13, 4*y = -z + 22 for z.

2

Solve -5*r = 0, -2*v + 7*r - 12*r = -4 for v.

2

Solve -m - 5 = 0, h - 33*m = -38*m - 22 for h.

3

Solve 4*a + 4 - 2 = 3*u, 0 = 3*u - 3*a for u.

-2

Solve -5*c + 37 = -3*b, -3*c + 2*b = -0*b - 23 for c.

5

Solve -3*a = 15, 4*a - 5 + 10 = -5*d for d.

3

Solve -4*k - k = -z - 28, -1 = 2*z + k for z.

-3