Q: What is the solution?
Solve -62*u = -191*u + 2064 for u.

A: 16

Q: What is the solution?
Solve -31*n - 12*n = 129 for n.

A: -3

Q: What is the solution?
Solve 41*a + 79*a = 31*a + 1068 for a.

A:
12