Write down the solution for this math problem: Solve 29868*x - 29863*x = -3 - 142 for x.
answer: -29

Write down the solution for this math problem: Solve 687792 + 206965 = 13559*k - 62273 - 778522 for k.
answer: 128

Write down the solution for this math problem: Solve -239631*z = -239756*z for z.
answer: 0

Write down the solution for this math problem: Solve 0 = -3730*d - 409008 - 72162 for d.
answer:
-129