Q: What is the solution?
Solve 12*v = 13*v + 2 for v.

A: -2

Q: What is the solution?
Solve 37*i - 9 + 456 = -65*i - 63 for i.

A: -5

Q: What is the solution?
Solve -15*x + 28*x = 9*x + 68 for x.

A:
17