Question: What is the solution?

Solve -7*a + 53*a = -276 for a.

Answer: -6

Question: What is the solution?

Solve -3644 = -103*d - 462 - 504 for d.

Answer: 26

Question: What is the solution?

Solve 156 = 14*q - 27*q for q.

Answer: -12

Question: What is the solution?

Solve 52*i - 264*i - 26*i - 15477 = -37*i for i.

Answer:
-77