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5/9-3/8 estimate the difference

User Ojs
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2 Answers

6 votes
The answer to the problem is 13/72 
User Karln
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3 votes

we are given


(5)/(9)-(3)/(8)

step-1: Firstly , we will find common denominator

we can see that denominators are 9 and 8

so, we will find LCM of 9 and 8

LCM(9,8)=72

step-2: now, we will make each denominators =72

so, in order to make denominator =72 , we will multiply by 8 in top and bottom of first term

and we multiply by 9 in top and bottom of second term

we get


(5*8)/(9*8)-(3*9)/(8*9)


(40)/(72)-(27)/(72)

step-3: We can see that both denominators are same

so, we can combine numerators by having common denominators


=(40-27)/(72)


=(13)/(72)

so, we get


(5)/(9)-(3)/(8)=(13)/(72)..............Answer

User FabriBertani
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