Solve -63*r = -54 - 352 - 665 for r.
Solve this plz.

A: 17

Solve 1149*a + 1442*a + 1315*a - 371070 = 0 for a.
Solve this plz.

A: 95

Solve -7*m - 21 + 7 = 0 for m.
Solve this plz.

A:
-2