Q: Solve 4355*w = 4343*w + 180 for w.

A: 15

Q: Solve 12*j + 17*j - 145 = 0 for j.

A: 5

Q: Solve 3*s = 9*s + 10*s for s.

A: 0

Q: Solve -90 = 2578*c - 2588*c for c.

A:
9