Q: Solve:
Solve -274*x - 22*x = 6216 for x.

A: -21

Q: Solve:
Solve -30*i + 3159 = 28*i - 102*i - 73*i for i.

A: -27

Q: Solve:
Solve 767 - 366 = -64*d - 431 for d.

A:
-13