Q: Solve -12*w - 16*w = -140 for w.

A: 5

Q: Solve -22*h = -62*h + 280 for h.

A: 7

Q: Solve -105 - 3 = -6*d for d.

A: 18

Q: Solve 79*f - 40*f = 37*f - 36 for f.

A:
-18