Q: Solve 489 = 144*r + 284 - 803 for r.

A: 7

Q: Solve -175 = 14*d - 29 + 78 for d.

A: -16

Q: Solve -236314*h = -236108*h - 2884 for h.

A: 14

Q: Solve 0 = -77*x + 240*x - 247 + 247 for x.

A:
0