Question: What is the solution?

Solve -855*c - 71 - 2116 = -275 + 653 for c.

Answer: -3

Question: What is the solution?

Solve -130*w + 103*w = 378 for w.

Answer: -14

Question: What is the solution?

Solve -973640 = -8653*w - 987*w for w.

Answer: 101

Question: What is the solution?

Solve -187*y - 407*y = 51*y + 758*y + 36478 for y.

Answer:
-26