Question

what is the least common denominator for 1/7 ,1/8  and 6/11?

Answer 1

Generally when we find Least common denominator,

If the any denominator number of them is not multiple of other denominator, then you just multiply the denominator numbers.

Given fractions are 1/7,1/8 and 6/11.

7*8*11 = 616

Least common denominator of given fractions is  616.

 

Answer 2

Write the prime factorization of each denominator.

7 = 1*7*3 = 7¹

8 = 2*2*2= 2³

11 = 1*11= 11¹

Multiply highest power of each factor in the either number.

L.C.D =2³*7¹*11¹

           = 616