Write down the solution for this math problem: Solve -50*i + 163*i - 54*i + 16 = 63*i for i.
answer: 4

Write down the solution for this math problem: Solve -135133736*a = -135133478*a - 19350 for a.
answer: 75

Write down the solution for this math problem: Solve -4318*z + 4327*z + 17 = 14 - 33 for z.
answer: -4

Write down the solution for this math problem: Solve 0*k = -10*k + 20 for k.
answer:
2