How do you simplify #-3/4 + 1/3 div-2/5# using PEMDAS?

1 Answer
Mar 9, 2016

Answer:

No Parentheses, no Exponents, so Division is first.

Explanation:

We take the #1/3div-2/5# part first.
Dividing by a fraction is multiplying by its inverse:
#1/3xx-5/2=-5/6#

Now the original changes into:
#-3/4-5/6#

For a common denominator:
#-(3/4xx3/3)-(5/6xx2/2)=-9/12-10/12#

And this is:
#-19/12=-1 7/12#