Add 21/54 and 42/24
1st number: 21/54, 2nd number: 1 18/24
21/54 + 42/24 is 77/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 24 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 54 × 4 = 216,
21/54 = 21 × 4/54 × 4 = 84/216 - Likewise, for the 2nd fraction, since 24 × 9 = 216,
42/24 = 42 × 9/24 × 9 = 378/216 - Add the two like fractions:
84/216 + 378/216 = 84 + 378/216 = 462/216 - 462/216 simplified gives 77/36
- So, 21/54 + 42/24 = 77/36
In mixed form: 25/36
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