Q: Solve -253782*z + 253732*z = 1500 for z.

A: -30

Q: Solve 0 = -190*j + 192*j + 2 for j.

A: -1

Q: Solve 30454*m - 30423*m + 682 = 0 for m.

A: -22

Q: Solve 666 = 2*r + 678 for r.

A:
-6