Question: What is the solution?

Solve 99*d - 69*d = -150 for d.

Answer: -5

Question: What is the solution?

Solve -1693446 = 1028*m - 1626626 for m.

Answer: -65

Question: What is the solution?

Solve 23*o - 15*o + 8 = 0 for o.

Answer: -1

Question: What is the solution?

Solve 9*q + 52*q = -244 for q.

Answer:
-4