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

Add 70/21 and 4/9

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

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

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

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