Solve 0 = 4*p - 5*d - 20, -14*d - 4 = -p - 13*d for p.

0

Solve -3*r - q + 2 = 0, 0 = 3*q - 5*q - 8 for r.

2

Solve 3*f + 81 = -5*g + 111, -7 = f - 4*g for f.

5

Solve -3*o + 3*z = 0, 4*o + 24 = 8*o + 2*z for o.

4

Solve 5*g - 3*a = -30, -7 = -g + 2*a - 4*a for g.

-3

Solve -4*o = 18*m - 20*m - 2, 4*o - m - 7 = 0 for o.

3

Solve -314*o = -313*o - 2*h + 13, -2*o + h = 14 for o.

-5

Solve 6*l = 10*l + f - 17, 2*f - 18 = -4*l for l.

4

Solve -9*b + 7*b + 2 = -4*v, 0 = -5*b - 5*v + 20 for b.

3

Solve 4 = 4*d - 4*c, -5*d = -3*c + 7*c - 50 for d.

6