Q: What is the solution?
Solve 4*d + 2330 = 2330 for d.

A: 0

Q: What is the solution?
Solve -6*s - 185 = 175 - 240 for s.

A: -20

Q: What is the solution?
Solve 79*r + 21*r = 2*r - 1968 + 5104 for r.

A:
32