Add 81/12 and 72/7
1st number: 6 9/12, 2nd number: 10 2/7
81/12 + 72/7 is 477/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
81/12 = 81 × 7/12 × 7 = 567/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
72/7 = 72 × 12/7 × 12 = 864/84 - Add the two like fractions:
567/84 + 864/84 = 567 + 864/84 = 1431/84 - 1431/84 simplified gives 477/28
- So, 81/12 + 72/7 = 477/28
In mixed form: 171/28
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