Q: Solve:
Solve 15*x - 21 - 9 = 0 for x.

A: 2

Q: Solve:
Solve -34*n - 614*n + 75285 = 69*n for n.

A: 105

Q: Solve:
Solve -101 = -38*a + 9*a - 14 for a.

A:
3