Write down the solution for this math problem: Solve -80*i + 104*i + 168 = 0 for i.
answer: -7

Write down the solution for this math problem: Solve -o - 2 = -4 for o.
answer: 2

Write down the solution for this math problem: Solve 80*d - 1197 - 204 - 679 = 0 for d.
answer: 26

Write down the solution for this math problem: Solve 95521 - 95609 = -4*u for u.
answer:
22