Add 10/21 and 21/9, Solve 10/21 + 2 3/9 as a fraction

Add 10/21 and 21/9

1^st number: 10/21, 2^nd number: 2 3/9

10/21 + 21/9 is 59/21.

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

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 21 × 3 = 63,
10/21 = 10 × 3/21 × 3 = 30/63
Likewise, for the 2nd fraction, since 9 × 7 = 63,
21/9 = 21 × 7/9 × 7 = 147/63
Add the two like fractions:
30/63 + 147/63 = 30 + 147/63 = 177/63
177/63 simplified gives 59/21
So, 10/21 + 21/9 = 59/21
In mixed form: 217/21

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