Q: Solve 25*c - 66*c - 54*c = 1710 for c.

A: -18

Q: Solve -30*c - 4591 - 27965 = 568*c + 7510 for c.

A: -67

Q: Solve -12*h - 4 = 56 for h.

A: -5

Q: Solve 6 + 2 = -4*f for f.

A:
-2