Solve -75333*u + 75371*u = 1865 - 725 for u.
Solve this plz.

A: 30

Solve 0 = i - 10 + 14 for i.
Solve this plz.

A: -4

Solve 16*s - 39*s = -8*s + 45 for s.
Solve this plz.

A:
-3