Add 7/21 and 15/5, Solve 7/21 + 3 0/5 as a fraction

Add 7/21 and 15/5

1^st number: 7/21, 2^nd number: 3 0/5

7/21 + 15/5 is 10/3.

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

Next, find the equivalent fraction of both fractional numbers with denominator 105
For the 1st fraction, since 21 × 5 = 105,
7/21 = 7 × 5/21 × 5 = 35/105
Likewise, for the 2nd fraction, since 5 × 21 = 105,
15/5 = 15 × 21/5 × 21 = 315/105
Add the two like fractions:
35/105 + 315/105 = 35 + 315/105 = 350/105
350/105 simplified gives 10/3
So, 7/21 + 15/5 = 10/3
In mixed form: 31/3

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