Q: What is the solution?
Solve 4 = 5*q - q for q.

A: 1

Q: What is the solution?
Solve 100*n - 345*n - 8004 = -107*n for n.

A: -58

Q: What is the solution?
Solve 188*f - 98*f - 128*f + 225 = 73 for f.

A:
4