Solve 0 = -2*o - 2*y + 4, -2*o + 3*y - 13 + 2 = 0 for o.

-1

Solve -2*b = -r + 6, 9*r + b + 21 = 14*r for r.

4

Solve -h = -5*b - 23, -b + 0*b - 15 = 5*h for h.

-2

Solve -127*z = -3*f - 132*z - 19, 4*f = -z + 3 for f.

2

Solve -5*p = 4*w, -5*p = -6*w + 2*w for w.

0

Solve 2*d - 1 = u, -22*u + 14 = -25*u - 5*d for u.

-3

Solve 4*u - 134*n + 9 = -137*n, -2*n - 6 = 0 for u.

0

Solve -5*g = -y - 7, -3*g = 2*y - 15 + 3 for g.

2

Solve r = l - 1, -36*l + 33*l + 8 = 2*r for r.

1

Solve 4*s = 2*a + 20, 0 = -s + 5*a - 7*a + 5 for s.

5