Q: Solve 8*j = 4*j + 12 for j.

A: 3

Q: Solve -116 = -26*r + 14 for r.

A: 5

Q: Solve -26*h + 49*h + 80 = 31*h for h.

A: 10

Q: Solve 13*j + 216 = 31*j for j.

A:
12