Question: What is the solution?

Solve 198 = 109*i - 43*i for i.

Answer: 3

Question: What is the solution?

Solve 48*z = 4*z - 2107 + 2459 for z.

Answer: 8

Question: What is the solution?

Solve -101*r + 103*r + 10 = 0 for r.

Answer: -5

Question: What is the solution?

Solve 3*q - 9 = 9 for q.

Answer:
6