Add 27/21 and 81/18, Solve 1 6/21 + 4 9/18 as a fraction

Add 27/21 and 81/18

1^st number: 1 6/21, 2^nd number: 4 9/18

27/21 + 81/18 is 81/14.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 18 is 126

Next, find the equivalent fraction of both fractional numbers with denominator 126
For the 1st fraction, since 21 × 6 = 126,
27/21 = 27 × 6/21 × 6 = 162/126
Likewise, for the 2nd fraction, since 18 × 7 = 126,
81/18 = 81 × 7/18 × 7 = 567/126
Add the two like fractions:
162/126 + 567/126 = 162 + 567/126 = 729/126
729/126 simplified gives 81/14
So, 27/21 + 81/18 = 81/14
In mixed form: 511/14

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