Write down the solution for this math problem: Solve -3988 = 653*n - 20966 for n.
answer: 26

Write down the solution for this math problem: Solve 26 = -6*j + 50 for j.
answer: 4

Write down the solution for this math problem: Solve -p - 27*p = -420 for p.
answer: 15

Write down the solution for this math problem: Solve -683*r = -737*r + 378 for r.
answer:
7