Q: Solve -63*z = -39*z - 120 for z.

A: 5

Q: Solve 15*x + 288 = -24*x - 141 for x.

A: -11

Q: Solve 3*i + 143 = 140 for i.

A: -1

Q: Solve -2*m = m + 2*m + 50 for m.

A:
-10