Write down the solution for this math problem: Solve -20*z - 5 - 15 = 0 for z.
answer: -1

Write down the solution for this math problem: Solve 12*z - 15*z = 0 for z.
answer: 0

Write down the solution for this math problem: Solve -35477 = 2685*w + 214228 for w.
answer: -93

Write down the solution for this math problem: Solve 143*a + 17296 = 24160 for a.
answer:
48