Q: Solve -30 + 5 = -5*k for k.

A: 5

Q: Solve -207 = 29*m + 25 for m.

A: -8

Q: Solve 4224*q - 4278*q = 69 + 39 for q.

A: -2

Q: Solve 14*x - 33 = -201 for x.

A:
-12