How do you simplify -3/4 + 1/3 div-2/5−34+13÷−25 using PEMDAS?

1 Answer
MeneerNask
Mar 9, 2016

No Parentheses, no Exponents, so Division is first.

Explanation:

We take the 1/3div-2/513÷−25 part first.
Dividing by a fraction is multiplying by its inverse:
1/3xx-5/2=-5/613×−52=−56

Now the original changes into:
-3/4-5/6−34−56

For a common denominator:
-(3/4xx3/3)-(5/6xx2/2)=-9/12-10/12−(34×33)−(56×22)=−912−1012

And this is:
-19/12=-1 7/12−1912=−1712

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