Add 21/3 and 21/27
1st number: 7 0/3, 2nd number: 21/27
21/3 + 21/27 is 70/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 27 is 27
Next, find the equivalent fraction of both fractional numbers with denominator 27 - For the 1st fraction, since 3 × 9 = 27,
21/3 = 21 × 9/3 × 9 = 189/27 - Likewise, for the 2nd fraction, since 27 × 1 = 27,
21/27 = 21 × 1/27 × 1 = 21/27 - Add the two like fractions:
189/27 + 21/27 = 189 + 21/27 = 210/27 - 210/27 simplified gives 70/9
- So, 21/3 + 21/27 = 70/9
In mixed form: 77/9
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