Write down the solution for this math problem: Solve 12516*i - 12456*i = 1380 for i.
answer: 23

Write down the solution for this math problem: Solve -169*w + 167*w - 112*w - 912 = 0 for w.
answer: -8

Write down the solution for this math problem: Solve -836 = -420*b - 7003 - 2653 for b.
answer: -21

Write down the solution for this math problem: Solve -7 = -2*o - 5 for o.
answer:
1