Write down the solution for this math problem: Solve -2*u = -25*u + 2*u for u.
answer: 0

Write down the solution for this math problem: Solve -397 + 145 = -5*s - 13*s for s.
answer: 14

Write down the solution for this math problem: Solve 421*l - 2554 - 4992 = 234*l + 2926 for l.
answer: 56

Write down the solution for this math problem: Solve -119*c = -12 + 1159 + 162 for c.
answer:
-11