Add 27/21 and 81/54, Solve 1 6/21 + 1 27/54 as a fraction

Add 27/21 and 81/54

1^st number: 1 6/21, 2^nd number: 1 27/54

27/21 + 81/54 is 39/14.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 21 × 18 = 378,
27/21 = 27 × 18/21 × 18 = 486/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
81/54 = 81 × 7/54 × 7 = 567/378
Add the two like fractions:
486/378 + 567/378 = 486 + 567/378 = 1053/378
1053/378 simplified gives 39/14
So, 27/21 + 81/54 = 39/14
In mixed form: 211/14

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