Write down the solution for this math problem: Solve 169*o = 179*o for o.
answer: 0

Write down the solution for this math problem: Solve 42*i - 31*i - 11 = 0 for i.
answer: 1

Write down the solution for this math problem: Solve 501*o - 1001 = 3007 for o.
answer: 8

Write down the solution for this math problem: Solve 570 = -10*l + 530 for l.
answer:
-4