Add 7/12 and 81/28
1st number: 7/12, 2nd number: 2 25/28
7/12 + 81/28 is 73/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
7/12 = 7 × 7/12 × 7 = 49/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
81/28 = 81 × 3/28 × 3 = 243/84 - Add the two like fractions:
49/84 + 243/84 = 49 + 243/84 = 292/84 - 292/84 simplified gives 73/21
- So, 7/12 + 81/28 = 73/21
In mixed form: 310/21
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