Question: What is the solution?

Solve 186*u + 100*u - 577 = 281 for u.

Answer: 3

Question: What is the solution?

Solve 31380 = 797*b + 13049 for b.

Answer: 23

Question: What is the solution?

Solve -2589*y - 63593 = 1095*y + 2182*y - 175047 for y.

Answer: 19

Question: What is the solution?

Solve 27 = 24*j - 69 for j.

Answer:
4