Question: What is the solution?

Solve 124*u = 85*u - 351 for u.

Answer: -9

Question: What is the solution?

Solve -3150*a + 1138200 = -19410*a for a.

Answer: -70

Question: What is the solution?

Solve -113*g = -270*g + 95*g - 1426 for g.

Answer: -23

Question: What is the solution?

Solve -104 = 37*m + 7 for m.

Answer:
-3