Q: What is the solution?
Solve -315*j + 35856 = -64*j + 496*j for j.

A: 48

Q: What is the solution?
Solve 87*r = -34*r + 2420 for r.

A: 20

Q: What is the solution?
Solve -4 = 7*i + 3 for i.

A:
-1