Solve -3*k + 3*s = -21, 0*s = -k - 3*s - 9 for k.

3

Solve 18 = 3*z + 5*f - 0*f, -3*f + 7 = -2*z for z.

1

Solve -2 = -p + 2*p, 2*r - 4*p = 10 for r.

1

Solve -5*y - 22 = 3*i, 5*i + 10 = 6*y - y for y.

-2

Solve 0*p + 3*p = 3*i - 9, -2*i - 2*p + 6 = 0 for i.

3

Solve 0 = -5*c - 4*p + 16, 2*c - 5*p - 10 = -3*p for c.

4

Solve 3*q - 4*a = -13, 0 = 2*q - 0*q + a - 6 for q.

1

Solve -4 = -30*w + 28*w, -3*v - 1 = -5*w for v.

3

Solve -3 = 4*f - 3*j - 0, 2*j + 2 = 4*f for f.

3

Solve -z + 5*r = 12, -4*z - r = z - 18 for z.

3