Add 15/20 and 21/24
15/20 + 21/24 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 20 × 6 = 120,
15/20 = 15 × 6/20 × 6 = 90/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Add the two like fractions:
90/120 + 105/120 = 90 + 105/120 = 195/120 - 195/120 simplified gives 13/8
- So, 15/20 + 21/24 = 13/8
In mixed form: 15/8
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