Q: Solve:
Solve 230*r = -6321 - 7611 + 3582 for r.

A: -45

Q: Solve:
Solve -874*p + 974*p - 826 - 1074 = 0 for p.

A: 19

Q: Solve:
Solve -286*a + 25*a = 129*a - 2*a + 5432 for a.

A:
-14