Question: What is the solution?

Solve 18*z - 20*z = -4 for z.

Answer: 2

Question: What is the solution?

Solve -52*v - 102 = 58*v - 93*v for v.

Answer: -6

Question: What is the solution?

Solve -8*t + 6*t - 10 = 0 for t.

Answer: -5

Question: What is the solution?

Solve -9*q = 20926 - 20971 for q.

Answer:
5