Add 21/24 and 28/40
21/24 + 28/40 is 63/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 40 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 40 × 3 = 120,
28/40 = 28 × 3/40 × 3 = 84/120 - Add the two like fractions:
105/120 + 84/120 = 105 + 84/120 = 189/120 - 189/120 simplified gives 63/40
- So, 21/24 + 28/40 = 63/40
In mixed form: 123/40
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