Add 27/21 and 7/4
1st number: 1 6/21, 2nd number: 1 3/4
27/21 + 7/4 is 85/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 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 4 × 21 = 84,
7/4 = 7 × 21/4 × 21 = 147/84 - Add the two like fractions:
108/84 + 147/84 = 108 + 147/84 = 255/84 - 255/84 simplified gives 85/28
- So, 27/21 + 7/4 = 85/28
In mixed form: 31/28
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