Question: What is the solution?

Solve -34*u + 27*u + 42 = 0 for u.

Answer: 6

Question: What is the solution?

Solve -955 = -153*x - 2791 for x.

Answer: -12

Question: What is the solution?

Solve 23*q + 9 = 26*q for q.

Answer: 3

Question: What is the solution?

Solve -9*y + 562213 - 562231 = 0 for y.

Answer:
-2