Q: Solve -9*z - 21*z = 20956 - 21136 for z.

A: 6

Q: Solve -54*z - 925 + 1411 = 0 for z.

A: 9

Q: Solve -47*w + 36*w + 55 = 0 for w.

A: 5

Q: Solve 1082*y - 553*y - 551*y = -176 for y.

A:
8