Question: What is the solution?

Solve 76 - 49 = -606*l + 609*l for l.

Answer: 9

Question: What is the solution?

Solve r + 65 = 14*r for r.

Answer: 5

Question: What is the solution?

Solve 463*i + 236*i - 293*i = -1486*i - 92708 for i.

Answer: -49

Question: What is the solution?

Solve -287*f = -128*f + 351*f - 3060 for f.

Answer:
6