Q: Solve:
Solve -695*r - 5163 + 30093 = -141*r for r.

A: 45

Q: Solve:
Solve -982*f + 1350 = -1057*f for f.

A: -18

Q: Solve:
Solve -330*d - 336*d = -636*d - 330 for d.

A:
11