Q: What is the solution?
Solve -94*s + 97*s - 3530 = -209*s + 4526 for s.

A: 38

Q: What is the solution?
Solve 6*u - 128 = -80 for u.

A: 8

Q: What is the solution?
Solve -7*d + 33 = 4*d for d.

A:
3