Solve -30233 - 33956 + 7721 = -293*w + 1036*w for w.
Solve this plz.

A: -76

Solve 48 - 45 = -i for i.
Solve this plz.

A: -3

Solve -9*c = -15*c + 7*c for c.
Solve this plz.

A:
0