Solve -18*s + 12*s = -18 for s.
Solve this plz.

A: 3

Solve 133*d - 90*d + 43890 = -187*d - 540*d for d.
Solve this plz.

A: -57

Solve 0 = -768*q + 772*q + 40 for q.
Solve this plz.

A:
-10