Solve 7*q = 10*q + 3 for q.
Solve this plz.

A: -1

Solve -2178*n + 7086 = -25584 for n.
Solve this plz.

A: 15

Solve -15*a - 18*a = -11*a + 132 for a.
Solve this plz.

A:
-6