Write down the solution for this math problem: Solve 260 = -8*a + 60*a for a.
answer: 5

Write down the solution for this math problem: Solve 27*d - 388*d + 28600 = -511*d - 1280*d for d.
answer: -20

Write down the solution for this math problem: Solve -271*c + 13*c - 3235 + 655 = 0 for c.
answer: -10

Write down the solution for this math problem: Solve 318*z - 8520 + 4509 = 13479 for z.
answer:
55