Add 21/27 and 4/12
21/27 + 4/12 is 10/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 27 × 4 = 108,
21/27 = 21 × 4/27 × 4 = 84/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
4/12 = 4 × 9/12 × 9 = 36/108 - Add the two like fractions:
84/108 + 36/108 = 84 + 36/108 = 120/108 - 120/108 simplified gives 10/9
- So, 21/27 + 4/12 = 10/9
In mixed form: 11/9
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