Write down the solution for this math problem: Solve 4669 = 25531*d - 25682*d - 5426 - 475 for d.
answer: -70

Write down the solution for this math problem: Solve 211*c - 845 = 6463 - 978 for c.
answer: 30

Write down the solution for this math problem: Solve 0 = 1303*a - 1296*a + 56 for a.
answer: -8

Write down the solution for this math problem: Solve -558*d - 10391 + 18310 + 27910 - 2349 = 0 for d.
answer:
60