Question: What is the solution?

Solve -20 = -2*y - 4 for y.

Answer: 8

Question: What is the solution?

Solve 148 = -19*o - 131*o + 2*o for o.

Answer: -1

Question: What is the solution?

Solve 314*x + 338*x + 5826 + 679 = -15 for x.

Answer: -10

Question: What is the solution?

Solve 1150 = 211*x - 44*x - 2190 for x.

Answer:
20