Solve 3*u - 49*u = -322 for u.
Solve this plz.

A: 7

Solve -4437*y + 113776 = 127398 - 328649 for y.
Solve this plz.

A: 71

Solve 10*r = -8 - 42 for r.
Solve this plz.

A:
-5