Solve 39*o = -16*o - 1380 + 4735 for o.
Solve this plz.

A: 61

Solve 13*q - 20*q + 21 = 0 for q.
Solve this plz.

A: 3

Solve 8 = 16*u + 12*u - 32*u for u.
Solve this plz.

A:
-2