Add 81/28 and 21/7
1st number: 2 25/28, 2nd number: 3 0/7
81/28 + 21/7 is 165/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
81/28 = 81 × 1/28 × 1 = 81/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
21/7 = 21 × 4/7 × 4 = 84/28 - Add the two like fractions:
81/28 + 84/28 = 81 + 84/28 = 165/28 - So, 81/28 + 21/7 = 165/28
In mixed form: 525/28
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