Solve 5*x - 17 = 5*q + 9*x, q - 4*x + 13 = 0 for q.

-5

Solve s = 3*r - 7, 19*s + 4*r - 2 = 24*s for s.

2

Solve o - 1 = 0, -4*o = k - 3*k - 4 for k.

0

Solve -b - 16 = -3*s, s - 5*b + 16 = -10*b for s.

4

Solve -11 = -4*a + d, 3*d - 6 = 2*a - 3*a for a.

3

Solve h + 8 = 2*n, -8*h - 4*n = -12*h - 24 for h.

-4

Solve 2*r - c = -6, r + 2*r + 2*c = -2 for r.

-2

Solve 1 = 3*r - f, 0*r - 5 = -5*r + 5*f for r.

0

Solve 4*d - 4*u = d + 21, u = -2*d + 3 for d.

3

Solve -d - 9*r = -11*r - 1, -d - r = -1 for d.

1