Add 81/14 and 15/21
1st number: 5 11/14, 2nd number: 15/21
81/14 + 15/21 is 13/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
81/14 = 81 × 3/14 × 3 = 243/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
15/21 = 15 × 2/21 × 2 = 30/42 - Add the two like fractions:
243/42 + 30/42 = 243 + 30/42 = 273/42 - 273/42 simplified gives 13/2
- So, 81/14 + 15/21 = 13/2
In mixed form: 61/2
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