Question: What is the solution?

Solve 46*u + 112 = 20 for u.

Answer: -2

Question: What is the solution?

Solve -85*z - 86*z + 220 = -182*z for z.

Answer: -20

Question: What is the solution?

Solve 0 = 56*c - 49*c + 28 for c.

Answer: -4

Question: What is the solution?

Solve 51*x - 50*x + 3564 = -107*x for x.

Answer:
-33