Add 90/9 and 5/21, Solve 10 0/9 + 5/21 as a fraction

Add 90/9 and 5/21

1^st number: 10 0/9, 2^nd number: 5/21

90/9 + 5/21 is 215/21.

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,
90/9 = 90 × 7/9 × 7 = 630/63
Likewise, for the 2nd fraction, since 21 × 3 = 63,
5/21 = 5 × 3/21 × 3 = 15/63
Add the two like fractions:
630/63 + 15/63 = 630 + 15/63 = 645/63
645/63 simplified gives 215/21
So, 90/9 + 5/21 = 215/21
In mixed form: 105/21

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