Q: Solve:
Solve 8822*u - 8612*u - 7560 = 0 for u.

A: 36

Q: Solve:
Solve 8295*d + 7533*d = -231688 - 258980 for d.

A: -31

Q: Solve:
Solve -14*r = -8*r - 18 for r.

A:
3