Add 21/24 and 18/15
1st number: 21/24, 2nd number: 1 3/15
21/24 + 18/15 is 83/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
18/15 = 18 × 8/15 × 8 = 144/120 - Add the two like fractions:
105/120 + 144/120 = 105 + 144/120 = 249/120 - 249/120 simplified gives 83/40
- So, 21/24 + 18/15 = 83/40
In mixed form: 23/40
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