Solve -21*a - 46*a + 268 = 0 for a.
Solve this plz.

A: 4

Solve -8*s = 3*s - 11 for s.
Solve this plz.

A: 1

Solve -3563*q + 1793*q + 930 = -1800*q for q.
Solve this plz.

A:
-31