Question

find the sum 8by9+7by12​

Answer 1

What is 8/9 plus 7/12 as a fraction by addition using LCM method?

step 1 Address formula, input parameters & values.

Input parameters & values:

8

9

& 7

12

8

9

+7

12

= ?

step 2 For unequal denominators, find the LCM (least common multiple) for both denominators

The LCM for 9 and 12 is 36.

step 3 To have the common denominator, multiply the LCM with both numerator & denominator

=(8 x 36)

(9 x 36)

+(7 x 36)

(12 x 36)

=32

36

+21

36

=(32 + 21)

36

step 4 Add both numerator and rewrite it in a single form.

=53

36

8

9

+7

12

=53

36

By using LCM method, 53/36 is the equivalent fraction by adding 8/9 and 7/12.

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Answer 2

(using cross multiplication method )
see in above picture

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