Write down the solution for this math problem: Solve -85 - 125 = -21*d for d.
answer: 10

Write down the solution for this math problem: Solve 2058*j + 96 = 2074*j for j.
answer: 6

Write down the solution for this math problem: Solve 639*t = 674*t - 35 for t.
answer: 1

Write down the solution for this math problem: Solve 7*k - 509 = -544 for k.
answer:
-5