Q: Solve:
Solve -239*g + 66720 = 1429*g for g.

A: 40

Q: Solve:
Solve -2983938 = 515*x - 2986513 for x.

A: 5

Q: Solve:
Solve -716*r + 12291 = 979*r - 18219 for r.

A:
18