Nahreenislam
Nahreenislam
05-12-2015
Mathematics
contestada
What is (4/9-7/15) divided by 13/10
Respuesta :
redcloud
redcloud
05-12-2015
First find least common denominator to subtract.
9=(3)×3
15=(3)×5
3×3×5=45 is lcd
4/9=20/45
7/15=21/45
(20/45-21/45)=(20-21)/45=-1/45
-1/45÷13/10
multiply by reciprocal instead of dividing
-1/45×10/13=(1×10)/(45×13)
-10/585
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