Q: Solve 0 = 151*u - 144*u + 28 for u.

A: -4

Q: Solve -689*w + 1373*w - 661*w - 368 = 0 for w.

A: 16

Q: Solve -1584*a = 195 + 7725 for a.

A: -5

Q: Solve -2613*i + 97713 = 1315*i - 1849*i for i.

A:
47