Write down the solution for this math problem: Solve -7 + 11 = -f for f.
answer: -4

Write down the solution for this math problem: Solve -515*k - 13277 = -73017 for k.
answer: 116

Write down the solution for this math problem: Solve -123*k = -84*k - 273 for k.
answer: 7

Write down the solution for this math problem: Solve 26*u = 12*u for u.
answer:
0