Write down the solution for this math problem: Solve 177 = -17*i + 109 for i.
answer: -4

Write down the solution for this math problem: Solve -274*o + 215*o = 177 for o.
answer: -3

Write down the solution for this math problem: Solve 63*q - 1779 = 111*q + 122*q + 1111 for q.
answer: -17

Write down the solution for this math problem: Solve 15*o - 25*o + 117 = 29*o for o.
answer:
3