Solve 0 = 2*r + 5*u + 28, -r + 2*u - 5*u - 16 = 0 for r.

-4

Solve -3*f - 6 = -4*c + 9*c, 5*f - 27 = 4*c for f.

3

Solve -y - 2*j = 13, 34*j + 12 = 31*j for y.

-5

Solve 2*f = -4*r - 2 - 12, 3*f - 2*r = 11 for f.

1

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

0

Solve 2 = x - k + 8, -2*x + 4*k = 18 for x.

-3

Solve -2*m = 3*l, 45*l - 49*l + m = 11 for l.

-2

Solve 6 = 2*p, -41*u - 12 = -44*u - 3*p for u.

1

Solve -3*f - 16 = 2*h, f = h + 3*f + 10 for h.

-2

Solve -2*b - 12 = f - 4, 3*f + 20 = -4*b for f.

-4