Question: What is the solution?

Solve 5*r - 2*r - 3 = 0 for r.

Answer: 1

Question: What is the solution?

Solve -12*o = -7*o for o.

Answer: 0

Question: What is the solution?

Solve 0 = -283*u + 301*u - 216 for u.

Answer: 12

Question: What is the solution?

Solve -541*g = -327*g + 10868 + 2400 for g.

Answer:
-62