Add 21/15 and 45/24
1st number: 1 6/15, 2nd number: 1 21/24
21/15 + 45/24 is 131/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
21/15 = 21 × 8/15 × 8 = 168/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
45/24 = 45 × 5/24 × 5 = 225/120 - Add the two like fractions:
168/120 + 225/120 = 168 + 225/120 = 393/120 - 393/120 simplified gives 131/40
- So, 21/15 + 45/24 = 131/40
In mixed form: 311/40
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