Add 28/21 and 18/24
1st number: 1 7/21, 2nd number: 18/24
28/21 + 18/24 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 24 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
28/21 = 28 × 8/21 × 8 = 224/168 - Likewise, for the 2nd fraction, since 24 × 7 = 168,
18/24 = 18 × 7/24 × 7 = 126/168 - Add the two like fractions:
224/168 + 126/168 = 224 + 126/168 = 350/168 - 350/168 simplified gives 25/12
- So, 28/21 + 18/24 = 25/12
In mixed form: 21/12
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