Add 81/9 and 5/21, Solve 9 0/9 + 5/21 as a fraction

Add 81/9 and 5/21

1^st number: 9 0/9, 2^nd number: 5/21

81/9 + 5/21 is 194/21.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 9 × 7 = 63,
81/9 = 81 × 7/9 × 7 = 567/63
Likewise, for the 2nd fraction, since 21 × 3 = 63,
5/21 = 5 × 3/21 × 3 = 15/63
Add the two like fractions:
567/63 + 15/63 = 567 + 15/63 = 582/63
582/63 simplified gives 194/21
So, 81/9 + 5/21 = 194/21
In mixed form: 95/21

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