Q: What is the solution?
Solve 30 = 42*u - 48*u for u.

A: -5

Q: What is the solution?
Solve 0 = -39*p + 45*p + 42 for p.

A: -7

Q: What is the solution?
Solve 34*j = 22*j - 24 for j.

A:
-2