Question: What is the solution?

Solve 11*f = 12*f - 2 for f.

Answer: 2

Question: What is the solution?

Solve -10*w - 17*w = -336 - 42 for w.

Answer: 14

Question: What is the solution?

Solve 0 = -6*i - 11*i - 102 for i.

Answer: -6

Question: What is the solution?

Solve 4389 = 289*y + 205*y - 95*y for y.

Answer:
11