Write down the solution for this math problem: Solve 8523*r + 17147 = -315250 for r.
answer: -39

Write down the solution for this math problem: Solve 44 = -8*k + 28 for k.
answer: -2

Write down the solution for this math problem: Solve 5 = 2*k + 15 for k.
answer: -5

Write down the solution for this math problem: Solve 36*x - 16*x - 20 = 0 for x.
answer:
1