Question: What is the solution?

Solve -60*h - 9*h - 1394 = 13*h for h.

Answer: -17

Question: What is the solution?

Solve -20*v + 7*v = -39 for v.

Answer: 3

Question: What is the solution?

Solve 2*o = 18*o + 74*o - 1800 for o.

Answer: 20

Question: What is the solution?

Solve -593*x + 604*x = -11 for x.

Answer:
-1