Q: Solve -684*u + 481 = -647*u for u.

A: 13

Q: Solve -7*y = -4*y - 15 for y.

A: 5

Q: Solve -4376 + 607 = -262*z + 8545 for z.

A: 47

Q: Solve 248*i - 3690 + 9234 = -15025 - 6711 for i.

A:
-110