Add 21/30 and 20/24
21/30 + 20/24 is 23/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
21/30 = 21 × 4/30 × 4 = 84/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
20/24 = 20 × 5/24 × 5 = 100/120 - Add the two like fractions:
84/120 + 100/120 = 84 + 100/120 = 184/120 - 184/120 simplified gives 23/15
- So, 21/30 + 20/24 = 23/15
In mixed form: 18/15
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