Write down the solution for this math problem: Solve 1404*u - 716*u = 718*u + 270 for u.
answer: -9

Write down the solution for this math problem: Solve 7331 + 4087 = 206*n + 2766 for n.
answer: 42

Write down the solution for this math problem: Solve -21*b + 65 - 23 = 0 for b.
answer: 2

Write down the solution for this math problem: Solve 50*x = -40*x + 83*x - 77 for x.
answer:
-11