Add 28/36 and 21/27
28/36 + 21/27 is 14/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 36 × 3 = 108,
28/36 = 28 × 3/36 × 3 = 84/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
21/27 = 21 × 4/27 × 4 = 84/108 - Add the two like fractions:
84/108 + 84/108 = 84 + 84/108 = 168/108 - 168/108 simplified gives 14/9
- So, 28/36 + 21/27 = 14/9
In mixed form: 15/9
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