Write down the solution for this math problem: Solve 52 = -7*i + 20*i for i.
answer: 4

Write down the solution for this math problem: Solve 1748 = 2101*k - 4555 for k.
answer: 3

Write down the solution for this math problem: Solve 13 = 3*z - 50 + 27 for z.
answer: 12

Write down the solution for this math problem: Solve 34*o + 8*o - 5947 + 5065 = 0 for o.
answer:
21