Solve 0 + 35 = -7*f for f.

-5

Solve -45*x = 44*x - 77*x for x.

0

Solve 7*r - 3*r = 20 for r.

5

Solve -b + 7 = 5 for b.

2

Solve -15*c - 130 = 11*c for c.

-5

Solve 16 + 2 = -6*k for k.

-3

Solve 3*q + 39 - 27 = 0 for q.

-4

Solve -u = -2*u for u.

0

Solve -312*h - 20 = -317*h for h.

4

Solve 49*s - 51*s - 4 = 0 for s.

-2