Write down the solution for this math problem: Solve 0 = 87*i + 903 - 120 for i.
answer: -9

Write down the solution for this math problem: Solve 0 = -i + 4*i - 15 for i.
answer: 5

Write down the solution for this math problem: Solve 4*h = 2*h + 10 for h.
answer: 5

Write down the solution for this math problem: Solve 32*x + 810 = 522 for x.
answer:
-9