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

4

Solve 2*f = -0*x - 4*x + 20, 4*f - 2*x = -20 for f.

-2

Solve -3*l = -4*f - 5, 25*l = 20*l - f - 30 for l.

-5

Solve 2*y = 5*r - 3 - 4, -3*y - 2*r = 1 for y.

-1

Solve -5*c = 5*p - 45 + 5, 0 = -4*c - 3*p + 28 for c.

4

Solve d = -3*d - 5*p + 1, -49 = 4*d - 5*p for d.

-6

Solve 29 = 5*o + 3*p + 1, -2*p - 3 = -o for o.

5

Solve 5*l + 5*i = 0, 5*l = -2*i - 6 + 15 for l.

3

Solve 2*z = s + 1 - 6, -4*z + s - 13 = 0 for z.

-4

Solve 4*m + 4 = 2*x + 22, -20 = 4*x - 4*m for x.

-1