Q: Solve:
Solve 24092726*d - 24092646*d = 1680 for d.

A: 21

Q: Solve:
Solve 417*g - 380*g - 666 = 0 for g.

A: 18

Q: Solve:
Solve -1277 + 1521 = -20*y + 81*y for y.

A:
4