Add 21/9 and 70/21, Solve 2 3/9 + 3 7/21 as a fraction

Add 21/9 and 70/21

1^st number: 2 3/9, 2^nd number: 3 7/21

21/9 + 70/21 is 17/3.

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,
21/9 = 21 × 7/9 × 7 = 147/63
Likewise, for the 2nd fraction, since 21 × 3 = 63,
70/21 = 70 × 3/21 × 3 = 210/63
Add the two like fractions:
147/63 + 210/63 = 147 + 210/63 = 357/63
357/63 simplified gives 17/3
So, 21/9 + 70/21 = 17/3
In mixed form: 52/3

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