Question: What is the solution?

Solve 47*u = -14*u + 488 for u.

Answer: 8

Question: What is the solution?

Solve -2171787*a + 2171948*a = -8211 for a.

Answer: -51

Question: What is the solution?

Solve -263*g = -175*g - 1320 for g.

Answer: 15

Question: What is the solution?

Solve 155544*d = 155582*d + 570 for d.

Answer:
-15