Q: What is the solution?
Solve -38 = -29*a - 9 for a.

A: 1

Q: What is the solution?
Solve 44 = 4720*k - 4729*k - 10 for k.

A: -6

Q: What is the solution?
Solve 0 = 22*k - 90 - 20 for k.

A:
5