Solve -233 + 74 = 31*h + 89 for h.
Solve this plz.

A: -8

Solve 397*c - 190242 = -1660*c - 382*c for c.
Solve this plz.

A: 78

Solve -16*b = -6*b - 10 for b.
Solve this plz.

A:
1