Add 7/21 and 21/5, Solve 7/21 + 4 1/5 as a fraction

Add 7/21 and 21/5

1^st number: 7/21, 2^nd number: 4 1/5

7/21 + 21/5 is 68/15.

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,
21/5 = 21 × 21/5 × 21 = 441/105
Add the two like fractions:
35/105 + 441/105 = 35 + 441/105 = 476/105
476/105 simplified gives 68/15
So, 7/21 + 21/5 = 68/15
In mixed form: 48/15

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