Write down the solution for this math problem: Solve 0 = 136*m - 156*m + 400 for m.
answer: 20

Write down the solution for this math problem: Solve -498*n - 320 + 6066 = -4214 for n.
answer: 20

Write down the solution for this math problem: Solve 112*l + 1199 + 4770 = -2 - 3997 for l.
answer: -89

Write down the solution for this math problem: Solve -2*o = 6*o + 2*o for o.
answer:
0