Add 21/12 and 72/24
1st number: 1 9/12, 2nd number: 3 0/24
21/12 + 72/24 is 19/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 12 × 2 = 24,
21/12 = 21 × 2/12 × 2 = 42/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
72/24 = 72 × 1/24 × 1 = 72/24 - Add the two like fractions:
42/24 + 72/24 = 42 + 72/24 = 114/24 - 114/24 simplified gives 19/4
- So, 21/12 + 72/24 = 19/4
In mixed form: 43/4
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