Question: What is the solution?

Solve 35*v = 84*v + 539 for v.

Answer: -11

Question: What is the solution?

Solve 561 = -548*t + 602*t - 681 for t.

Answer: 23

Question: What is the solution?

Solve 0 = 25*i - 99*i - 962 for i.

Answer: -13

Question: What is the solution?

Solve -206*k + 748 = -128*k - 122*k for k.

Answer:
-17