So the answer is <span>–1.8 +0.9 –1.4 +0.4
or C. -1.9</span>
Lets assume the whole pie is 1, that is all fractions added together have to sum 1.
If Victor eats 1/6 out of 5/6, then the rest is 4/6 of the pie, that is the subtraction of those fractions.