Write down the solution for this math problem: Solve 129*p - 4 = 128*p for p.
answer: 4

Write down the solution for this math problem: Solve 3342 - 6129 = 52*k - 3151 for k.
answer: 7

Write down the solution for this math problem: Solve -289*y + 5603 - 3291 = 0 for y.
answer: 8

Write down the solution for this math problem: Solve -413*a + 7004 - 1237 = -6210 for a.
answer:
29