Q: Solve:
Solve -159*u - 39073 = -29374 for u.

A: -61

Q: Solve:
Solve -169*w + 1464 = 86*w + 28*w + 83*w for w.

A: 4

Q: Solve:
Solve 126457*k - 126351*k = 0 for k.

A:
0