Add 81/5 and 14/21, Solve 16 1/5 + 14/21 as a fraction

Add 81/5 and 14/21

1^st number: 16 1/5, 2^nd number: 14/21

81/5 + 14/21 is 253/15.

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,
81/5 = 81 × 21/5 × 21 = 1701/105
Likewise, for the 2nd fraction, since 21 × 5 = 105,
14/21 = 14 × 5/21 × 5 = 70/105
Add the two like fractions:
1701/105 + 70/105 = 1701 + 70/105 = 1771/105
1771/105 simplified gives 253/15
So, 81/5 + 14/21 = 253/15
In mixed form: 1613/15

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