Question: What is the solution?

Solve 159 + 490 = 59*m for m.

Answer: 11

Question: What is the solution?

Solve 672 = -175*u + 271*u for u.

Answer: 7

Question: What is the solution?

Solve 808*p - 13581 - 20186 = 169 for p.

Answer: 42

Question: What is the solution?

Solve -177*a - 780 = -422*a + 185*a for a.

Answer:
13