Oh this is a hard one I will get back to you whenever I get it
- 5/12 + ( - 1/4) =
Adding two negatives results in a negative
-1/4 = -3/12
-3/12 + -5/12 = -8/12
-8/12 + 3/12 < Subtract and take the sign of the BIGGER number.
8 - 3 = 5
- 5/12
Answer: - 5/12
I would try using a table. It might work better.
Check the picture below
it can't be -3... since is width unit, so it has to be the other
and recall that length = 2w - 5
The correct answer is one doughnut cost 2$