Add 4/9 and 70/21, Solve 4/9 + 3 7/21 as a fraction

Add 4/9 and 70/21

1^st number: 4/9, 2^nd number: 3 7/21

4/9 + 70/21 is 34/9.

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,
4/9 = 4 × 7/9 × 7 = 28/63
Likewise, for the 2nd fraction, since 21 × 3 = 63,
70/21 = 70 × 3/21 × 3 = 210/63
Add the two like fractions:
28/63 + 210/63 = 28 + 210/63 = 238/63
238/63 simplified gives 34/9
So, 4/9 + 70/21 = 34/9
In mixed form: 37/9

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