Add 16/15 and 81/21
1st number: 1 1/15, 2nd number: 3 18/21
16/15 + 81/21 is 517/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
16/15 = 16 × 7/15 × 7 = 112/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
81/21 = 81 × 5/21 × 5 = 405/105 - Add the two like fractions:
112/105 + 405/105 = 112 + 405/105 = 517/105 - So, 16/15 + 81/21 = 517/105
In mixed form: 497/105
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