Add 21/20 and 9/24
1st number: 1 1/20, 2nd number: 9/24
21/20 + 9/24 is 57/40.
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,
21/20 = 21 × 6/20 × 6 = 126/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
9/24 = 9 × 5/24 × 5 = 45/120 - Add the two like fractions:
126/120 + 45/120 = 126 + 45/120 = 171/120 - 171/120 simplified gives 57/40
- So, 21/20 + 9/24 = 57/40
In mixed form: 117/40
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