Add 4/5 and 30/21, Solve 4/5 + 1 9/21 as a fraction

Add 4/5 and 30/21

1^st number: 4/5, 2^nd number: 1 9/21

4/5 + 30/21 is 78/35.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 5 × 21 = 105,
4/5 = 4 × 21/5 × 21 = 84/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
30/21 = 30 × 5/21 × 5 = 150/105
Add the two like fractions:
84/105 + 150/105 = 84 + 150/105 = 234/105
234/105 simplified gives 78/35
So, 4/5 + 30/21 = 78/35
In mixed form: 28/35

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