Write down the solution for this math problem: Solve 20 = 97*o - 101*o for o.
answer: -5

Write down the solution for this math problem: Solve 6*v = 13*v - 6*v for v.
answer: 0

Write down the solution for this math problem: Solve 129*v - 3116 + 1611 + 5117 = 0 for v.
answer: -28

Write down the solution for this math problem: Solve -2 - 18 = -5*m for m.
answer:
4