Write down the solution for this math problem: Solve 2*l = 9*l + 7 for l.
answer: -1

Write down the solution for this math problem: Solve h - 9*h - 16 = 0 for h.
answer: -2

Write down the solution for this math problem: Solve 1896 = -42*o - 28*o - 134 for o.
answer: -29

Write down the solution for this math problem: Solve 13379 = -1335*r - 41247 - 2779 for r.
answer:
-43