2/3 - 3/4 div.by 5/8 + 2/3
do i need to find a common denominator for the first two fractions as ell as the next two i have not done this in a while just need to remember can you show me?
(2/3 - 3/4)
(5/8 + 2/3)
first lets do what is inside the parentheses (you must find a common denominator in this case 12.
(2/3 - 3/4) = (8/12 - 9/12) = -(1/12)
(5/8 + 2/3) = (15/24 + 16/24) = -(1/24)
So now we have:
-(1/12)
-(1/24)
the negatives cancel.
(1/12)
(1/24)
and we can cross multiply
1.....24....24
-- * -- = ---
12....1.....12
so the answer is 2