Q: Solve 0 = -154*p + 22*p - 2772 for p.

A: -21

Q: Solve 399 = -92*z - 429 for z.

A: -9

Q: Solve 0 = -85*l + 34*l + 150 + 156 for l.

A: 6

Q: Solve 0 = -31940*a + 31927*a + 559 for a.

A:
43