Write down the solution for this math problem: Solve 3*a - 9 = 6*a for a.
answer: -3

Write down the solution for this math problem: Solve 0 = -9*x + 13*x + 20 for x.
answer: -5

Write down the solution for this math problem: Solve -8*s + 7*s = 3 for s.
answer: -3

Write down the solution for this math problem: Solve -52377 = -1177*l + 2204*l for l.
answer:
-51