Q: What is the solution?
Solve 9*y - 10 = 19*y for y.

A: -1

Q: What is the solution?
Solve -92*w + 45*w = -43*w + 60 for w.

A: -15

Q: What is the solution?
Solve -135*u - 154400 = -845*u - 1220*u for u.

A:
80