Solve 181*c + 175 = 318 + 219 for c.
Solve this plz.

A: 2

Solve -10*h + 21 = -9 for h.
Solve this plz.

A: 3

Solve 0 = 4427*z - 4346*z - 891 for z.
Solve this plz.

A:
11