Add 18/24 and 21/15
1st number: 18/24, 2nd number: 1 6/15
18/24 + 21/15 is 43/20.
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,
18/24 = 18 × 5/24 × 5 = 90/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
21/15 = 21 × 8/15 × 8 = 168/120 - Add the two like fractions:
90/120 + 168/120 = 90 + 168/120 = 258/120 - 258/120 simplified gives 43/20
- So, 18/24 + 21/15 = 43/20
In mixed form: 23/20
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