Question: What is the solution?

Solve -179 = -20*a - 39 for a.

Answer: 7


Question: What is the solution?

Solve 104*a + 268*a = 3664 + 4520 for a.

Answer: 22


Question: What is the solution?

Solve -3064*r + 10544 - 2606 - 35431 = 141027 for r.

Answer: -55


Question: What is the solution?

Solve 165 = -2*s + 169 for s.

Answer:
2