Question: What is the solution?

Solve 3648 = 21*x + 3543 for x.

Answer: 5

Question: What is the solution?

Solve -38 - 2 = 17*y + 11 for y.

Answer: -3

Question: What is the solution?

Solve -34*z = 66*z - 200 for z.

Answer: 2

Question: What is the solution?

Solve 2*u - 12 = -6 for u.

Answer:
3