Q: What is the solution?
Solve 31*z + 579 = 755 + 785 for z.

A: 31

Q: What is the solution?
Solve -1200*i + 2388*i = 1168*i - 120 for i.

A: -6

Q: What is the solution?
Solve 38*y + 25*y - 235 = 16*y for y.

A:
5