Add 27/21 and 81/84
1st number: 1 6/21, 2nd number: 81/84
27/21 + 81/84 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
27/21 = 27 × 4/21 × 4 = 108/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
81/84 = 81 × 1/84 × 1 = 81/84 - Add the two like fractions:
108/84 + 81/84 = 108 + 81/84 = 189/84 - 189/84 simplified gives 9/4
- So, 27/21 + 81/84 = 9/4
In mixed form: 21/4
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