Q: Solve:
Solve 141 + 30 = -57*z for z.

A: -3

Q: Solve:
Solve 640*y = -504*y - 93*y + 8659 for y.

A: 7

Q: Solve:
Solve -13412*l - 12095*l + 772380 = -5996*l + 6235*l for l.

A:
30