Add 84/28 and 81/12
1st number: 3 0/28, 2nd number: 6 9/12
84/28 + 81/12 is 39/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
84/28 = 84 × 3/28 × 3 = 252/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
81/12 = 81 × 7/12 × 7 = 567/84 - Add the two like fractions:
252/84 + 567/84 = 252 + 567/84 = 819/84 - 819/84 simplified gives 39/4
- So, 84/28 + 81/12 = 39/4
In mixed form: 93/4
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