Q: Solve 646*l = -1183*l - 1041*l - 129150 for l.

A: -45

Q: Solve 0*r + 36*r = r - 1085 for r.

A: -31

Q: Solve z = -21*z + 321 - 167 for z.

A: 7

Q: Solve 286*a - 487*a = -17688 for a.

A:
88