Q: What is the solution?
Solve -8*q + 4 = -20 for q.

A: 3

Q: What is the solution?
Solve 0 = -3*o + 173516 - 173576 for o.

A: -20

Q: What is the solution?
Solve 162*i - 171*i = 160*i - 6253 for i.

A:
37