Q: Solve 2*r = -21*r - 179 - 281 for r.

A: -20

Q: Solve 2542*h - 76642 + 110237 = -108757 for h.

A: -56

Q: Solve 64*r - 528*r - 13299 = -61*r for r.

A: -33

Q: Solve -176*k + 252*k + 119*k + 975 = 0 for k.

A:
-5