Q: Solve:
Solve 0 = -12*y - 28*y - 40 for y.

A: -1

Q: Solve:
Solve -12 + 48 = 9*x for x.

A: 4

Q: Solve:
Solve -108*p + 72989 - 38016 = 38429 for p.

A:
-32