Question: What is the solution?

Solve 1 = -45*j + 46*j for j.

Answer: 1

Question: What is the solution?

Solve -915*a = -864*a + 51 for a.

Answer: -1

Question: What is the solution?

Solve 0 = 3*y - 7*y - 20 for y.

Answer: -5

Question: What is the solution?

Solve -75*s = 408*s - 211*s - 2448 for s.

Answer:
9