Add 40/21 and 72/81, Solve 1 19/21 + 72/81 as a fraction

Add 40/21 and 72/81

1^st number: 1 19/21, 2^nd number: 72/81

40/21 + 72/81 is 176/63.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 81 is 567

Next, find the equivalent fraction of both fractional numbers with denominator 567
For the 1st fraction, since 21 × 27 = 567,
40/21 = 40 × 27/21 × 27 = 1080/567
Likewise, for the 2nd fraction, since 81 × 7 = 567,
72/81 = 72 × 7/81 × 7 = 504/567
Add the two like fractions:
1080/567 + 504/567 = 1080 + 504/567 = 1584/567
1584/567 simplified gives 176/63
So, 40/21 + 72/81 = 176/63
In mixed form: 250/63

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