Q: Solve -57305*x + 57289*x = 352 for x.

A: -22

Q: Solve 485*r + 126*r - 171*r = 37400 for r.

A: 85

Q: Solve 3375*n + 6283 = -310*n - 82157 for n.

A: -24

Q: Solve 398*u + 392*u + 59 = 795*u - 1 for u.

A:
12