Solve 0 = 5*f + 4*b - 0*b + 15, 2*f + 3 = -b for f.

1

Solve 7*y - a + 3*a = 20, 5*a - 15 = 0 for y.

2

Solve -11*i + 12*i = 3*y - 12, -20 = i - 5*y for i.

0

Solve 4*i + 3*j + 9 = 6*i, 5*i - 5*j = 10 for i.

-3

Solve -20 = -5*p - 5*u, -4*p + 5*u - 4 - 7 = 0 for p.

1

Solve 3*l + 4*t - 11 = 0, 3*l + 3*t - 2 = 4 for l.

-3

Solve x - 4*i + 3 = -2*i, -x + i = 0 for x.

3

Solve -4*z + 68*w = 65*w, 3*z = -5*w + 29 for z.

3

Solve 4 = -2*r - 3*u + 17, -30 = -5*r - 5*u for r.

5

Solve 3*b + 9 = z, -2*z - 12 - 3 = 5*b for z.

0