Question: What is the solution?

Solve 165*y - 146*y = -171 for y.

Answer: -9

Question: What is the solution?

Solve -3 = 3*t + 9 for t.

Answer: -4

Question: What is the solution?

Solve 888*i + 349*i - 13935 = -6616 + 21132 for i.

Answer: 23

Question: What is the solution?

Solve c - 403 + 171 = -39*c + 48 for c.

Answer:
7