Q: Solve:
Solve -1019*s - 3658*s = 1213*s - 247380 for s.

A: 42

Q: Solve:
Solve -7*t = -48 + 90 for t.

A: -6

Q: Solve:
Solve -60*i + 112*i - 102 = 35*i for i.

A:
6