1
2 whole and 5 over 6
When you are using non-standard definitions of "plus" and "minus", or of "equal".
-1 multiplied by -1 is 1
1 minus 1/2 minus 1/3 is equal to 0.166667
When a problem uses difference they are dealing with subtraction, the question is asking what minus what will equal 1. Therefore your answer is 2 and 1
42/3 - 14/5 = 43/15 or 213/15
1 whole and 1 8th
When you divide a whole into 1 equal part, the whole is the one and only equal part
1 minus 1/8 is 7/8.
-1 minus 6 is -7
As stated in the question, it equals 1.