Solve -19*b - 19 = -f - 14*b, -3*b = 3*f + 15 for f.

-1

Solve 0 = -4*u + 12, 10 = -2*w - u + 11 for w.

-1

Solve 3*a = a + d, -5*a + 10 = -5*d for a.

-2

Solve -t + 12 = 3*b, -4*b + 40*t - 43*t + 11 = 0 for b.

5

Solve 5*s - 103 = 3*r - 66, 5*s - 33 = 2*r for s.

5

Solve 0 = -4*z - 4*i + 36, -53*z - 2*i + 24 = -49*z for z.

3

Solve -5*w = -l - 3*l - 20, 4 = w + 9*l for w.

4

Solve -5 = -5*k + 5*r, -17*k + 13*k = 3*r - 25 for k.

4

Solve 637*p - 33 = -2*f + 642*p, -3*p = 4*f - 1 for f.

4

Solve 4*c - w + 22 = 0, 2*c + w + 2*w = -4 for c.

-5