Q: What is the solution?
Solve 45 = -2*s - 7*s for s.

A: -5

Q: What is the solution?
Solve -136 - 272 = 77*t - 100 for t.

A: -4

Q: What is the solution?
Solve -14*i - 1615 = -1531 for i.

A:
-6