Q: Solve:
Solve 17*r + 211 - 170 = 279 for r.

A: 14

Q: Solve:
Solve -11 = -435*a + 437*a - 3 for a.

A: -4

Q: Solve:
Solve -11*a + 39 + 5 = 0 for a.

A:
4