Question: What is the solution?

Solve 0 = -9*j + 17 - 98 for j.

Answer: -9

Question: What is the solution?

Solve -42 + 154 = 81*f + 49 - 342 for f.

Answer: 5

Question: What is the solution?

Solve 29*v - 5*v = -4*v for v.

Answer: 0

Question: What is the solution?

Solve 3*z - 65418 = -0*z + 27*z - 63762 for z.

Answer:
-69