Welcome :: Homework Help and Answers :: Mathskey.com

Recent Visits

  
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

13,459 questions

17,854 answers

1,446 comments

811,139 users

what is the common denominator of 7/10 and 8/15

0 votes
what is the common denominator of 7/10 and 8/15.
asked Mar 12, 2014 in PRE-ALGEBRA by johnkelly Apprentice

2 Answers

0 votes

Given fractions are 7/10 and 8/15.

List the multiples of denominators.

Multiples of 15 are 15,30,45..,150,..

Multiples of 10 are 10,20,...,150,.....

Least common denominator of given fractions is 150.

answered Mar 20, 2014 by dozey Mentor

Check your answer

Multiples of 15 are 15,30,45, 60

Multiples of 10 are 10,20, 30, 40, 50, 60

Least common denominator of given fractions is 30

0 votes

Write the prime factorization of each number.

15= 3*5* = 31*51

10=2*5= 21*51

 

Multiply highest power of  each factor in the either number.

L.C.M =21*31*51    

           = 30

 

Least common denominator of given fractions is 30

answered Mar 22, 2014 by anonymous

Related questions

...