Write down the solution for this math problem: Solve 49*d + 38 - 185 = 0 for d.
answer: 3

Write down the solution for this math problem: Solve 23*r - 82*r - 1227 + 8720 = 0 for r.
answer: 127

Write down the solution for this math problem: Solve -235*s - 71*s - 55*s = 722 for s.
answer: -2

Write down the solution for this math problem: Solve -54*d + 81*d - 297 = 0 for d.
answer:
11