Q: Solve:
Solve -4*o - 14*o = -9*o + 72 for o.

A: -8

Q: Solve:
Solve -3247*n - 1474 + 19685 - 6531 = -53260 for n.

A: 20

Q: Solve:
Solve 17*r = -9*r - 104 for r.

A:
-4