Q: Solve:
Solve -79*a + 25 = -84*a for a.

A: -5

Q: Solve:
Solve 0 = -353*o + 1059*o + 396*o + 130036 for o.

A: -118

Q: Solve:
Solve 78 = -6*o + 48 for o.

A:
-5