Write down the solution for this math problem: Solve 0 = -602*d - 46967 + 47890 + 83959 for d.
answer: 141

Write down the solution for this math problem: Solve 0 = -1531*l + 1892*l - 7942 for l.
answer: 22

Write down the solution for this math problem: Solve 212 = 5*d + 207 for d.
answer: 1

Write down the solution for this math problem: Solve -2739 - 1542 = -269*f + 2382 + 62 for f.
answer:
25