Write down the solution for this math problem: Solve -6*a + 901 = -4*a - 33*a - 60 for a.
answer: -31

Write down the solution for this math problem: Solve -316*u - 164*u = 189*u + 19401 for u.
answer: -29

Write down the solution for this math problem: Solve 0 = 128*o - 99*o for o.
answer: 0

Write down the solution for this math problem: Solve 1571 - 262 = -77*l for l.
answer:
-17