Write down the solution for this math problem: Solve 18*j - 288 = -9*j + 63*j for j.
answer: -8

Write down the solution for this math problem: Solve 4 = 48*r - 47*r for r.
answer: 4

Write down the solution for this math problem: Solve 0 = -8173*o - 233*o - 756540 for o.
answer: -90

Write down the solution for this math problem: Solve -66 = -2*l - 9*l for l.
answer:
6