Write down the solution for this math problem: Solve 374*z - 756 = 311*z for z.
answer: 12

Write down the solution for this math problem: Solve 7856 = 50*i + 8056 for i.
answer: -4

Write down the solution for this math problem: Solve 0 = 87*i + 18*i + 86*i - 3629 for i.
answer: 19

Write down the solution for this math problem: Solve 0 = 170*m - 166*m - 12 for m.
answer:
3