Question: What is the solution?

Solve -14*v = -820 + 708 for v.

Answer: 8

Question: What is the solution?

Solve 1204 = 121*r - 490 for r.

Answer: 14

Question: What is the solution?

Solve -63 = 30*f + 57 for f.

Answer: -4

Question: What is the solution?

Solve 45*y + 2821 = -133*y - 39*y for y.

Answer:
-13