Add 15/24 and 7/21
15/24 + 7/21 is 23/24.
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,
15/24 = 15 × 7/24 × 7 = 105/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
7/21 = 7 × 8/21 × 8 = 56/168 - Add the two like fractions:
105/168 + 56/168 = 105 + 56/168 = 161/168 - 161/168 simplified gives 23/24
- So, 15/24 + 7/21 = 23/24
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