Add 21/24 and 7/20
21/24 + 7/20 is 49/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 20 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 20 × 6 = 120,
7/20 = 7 × 6/20 × 6 = 42/120 - Add the two like fractions:
105/120 + 42/120 = 105 + 42/120 = 147/120 - 147/120 simplified gives 49/40
- So, 21/24 + 7/20 = 49/40
In mixed form: 19/40
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