Write down the solution for this math problem: Solve 0 = 511*z - 637*z - 882 for z.
answer: -7

Write down the solution for this math problem: Solve 36*n - 216 - 288 = 0 for n.
answer: 14

Write down the solution for this math problem: Solve -r + 21 - 17 = 0 for r.
answer: 4

Write down the solution for this math problem: Solve 584 + 585 = d + 1166 for d.
answer:
3