Write down the solution for this math problem: Solve 10*y + 4223 = 49*y - 142*y for y.
answer: -41

Write down the solution for this math problem: Solve 20*n + 31*n + 8 = 36*n + 263 for n.
answer: 17

Write down the solution for this math problem: Solve 38*z + 42 = 17*z for z.
answer: -2

Write down the solution for this math problem: Solve -u + 296 - 308 = 0 for u.
answer:
-12