Add 21/30 and 81/24
1st number: 21/30, 2nd number: 3 9/24
21/30 + 81/24 is 163/40.
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,
81/24 = 81 × 5/24 × 5 = 405/120 - Add the two like fractions:
84/120 + 405/120 = 84 + 405/120 = 489/120 - 489/120 simplified gives 163/40
- So, 21/30 + 81/24 = 163/40
In mixed form: 43/40
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