If you start with an integer and, subtract - 85, add - 57, subtract 68, add - 77, add 55 and subtract-73 the result is 0. Find the integer that you start with

Start with zero and do all the operations.

0 - (-85) + (-57) - 68 + (-77) + 55 - (-73) = 11

Since when you start with 0, you end up with 11, if you start with - 11 you'll end up with 0.

Answer: - 11.