Write down the solution for this math problem: Solve -778387 = 2438*h + 4286*h + 3129*h for h.
answer: -79

Write down the solution for this math problem: Solve 39*u - 258 = 125*u for u.
answer: -3

Write down the solution for this math problem: Solve -176*f + 384 = -144*f for f.
answer: 12

Write down the solution for this math problem: Solve -7*x = -5*x + 4 for x.
answer:
-2