Solve -160*r - 145*r = 66*r + 78*r - 8980 for r.
Solve this plz.

A: 20

Solve -1237*m + 1505*m = -1340 for m.
Solve this plz.

A: -5

Solve -42*g - 192 = -76*g + 18*g for g.
Solve this plz.

A:
12