Add 21/24 and 28/21
1st number: 21/24, 2nd number: 1 7/21
21/24 + 28/21 is 53/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
21/24 = 21 × 7/24 × 7 = 147/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
28/21 = 28 × 8/21 × 8 = 224/168 - Add the two like fractions:
147/168 + 224/168 = 147 + 224/168 = 371/168 - 371/168 simplified gives 53/24
- So, 21/24 + 28/21 = 53/24
In mixed form: 25/24
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