Q: Solve 0 = 2*a + 6*a - 6*a for a.

A: 0

Q: Solve -2328*s + 724*s - 2310*s = -101764 for s.

A: 26

Q: Solve -80*d = -75*d for d.

A: 0

Q: Solve -40*q + 409*q = 59*q - 5890 for q.

A:
-19