Add 21/24 and 42/30
1st number: 21/24, 2nd number: 1 12/30
21/24 + 42/30 is 91/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 30 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 30 × 4 = 120,
42/30 = 42 × 4/30 × 4 = 168/120 - Add the two like fractions:
105/120 + 168/120 = 105 + 168/120 = 273/120 - 273/120 simplified gives 91/40
- So, 21/24 + 42/30 = 91/40
In mixed form: 211/40
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