Question: What is the solution?

Solve -17*y - 1407 - 429 = 37*y for y.

Answer: -34

Question: What is the solution?

Solve 221*o + 7*o + 2651 = -13*o for o.

Answer: -11

Question: What is the solution?

Solve 0 = 10*y + 6*y + 80 for y.

Answer: -5

Question: What is the solution?

Solve 10*r - 4256 = 76*r - 1154 for r.

Answer:
-47