Question

find the LCM and HCF of 2 by 3, 3 by 5 , 4 by 7 , 9 by 13
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Answer 1

Step-by-step explanation:

Answer : \bold{LCM \: = \: 36}LCM=36

Explanation-

Given :

\dfrac{2}{3} \: \dfrac{3}{5} \: \dfrac{4}{7} \: \dfrac{9}{13}

3

2

5

3

7

4

13

9

Lcm \: = \dfrac{lcm \: of \: numerators}{hcf \: of \: denominators}Lcm=

hcfofdenominators

lcmofnumerators

Numerators = 2, 3, 4 and 7

LCM of Numerators = 36

Denominators = 3, 5, 7 and 13

HCF of Denominators = 1

Lcm \: = \dfrac{36}{1} = 36Lcm=

1

36

=36

Hence:

\bold{LCM \: = \: 36}LCM=36

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