Write down the solution for this math problem: Solve -1596 = -181*l - 115*l + 220*l for l.
answer: 21

Write down the solution for this math problem: Solve -p + 4755 = 4743 for p.
answer: 12

Write down the solution for this math problem: Solve 143*a = -8*a - 316 - 137 for a.
answer: -3

Write down the solution for this math problem: Solve 85*d + 637 + 1201 + 542 = 0 for d.
answer:
-28