Write down the solution for this math problem: Solve 79*l - 199 - 38 = 0 for l.
answer: 3

Write down the solution for this math problem: Solve -1509*u + 10595 = -15785 - 3800 for u.
answer: 20

Write down the solution for this math problem: Solve 1509*o = 920*o - 2636*o - 591*o - 95400 for o.
answer: -25

Write down the solution for this math problem: Solve -66*a = -401 - 433 - 1278 for a.
answer:
32