Q: Solve 0 = 499*f + 6410 + 77 for f.

A: -13

Q: Solve -197*o + o = -2337 + 10472 + 1469 for o.

A: -49

Q: Solve -101*x - 2322 - 6946 = 931*x + 5180 for x.

A: -14

Q: Solve -37*d + 320 = 61*d + 26 for d.

A:
3