Q: Solve:
Solve -56*i - 5410 = 81*i + 618 for i.

A: -44

Q: Solve:
Solve -210 = 175*r - 140*r for r.

A: -6

Q: Solve:
Solve -48*v - 21952 = -229*v - 211*v for v.

A:
56