Add 21/54 and 42/56
21/54 + 42/56 is 41/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 56 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 54 × 28 = 1512,
21/54 = 21 × 28/54 × 28 = 588/1512 - Likewise, for the 2nd fraction, since 56 × 27 = 1512,
42/56 = 42 × 27/56 × 27 = 1134/1512 - Add the two like fractions:
588/1512 + 1134/1512 = 588 + 1134/1512 = 1722/1512 - 1722/1512 simplified gives 41/36
- So, 21/54 + 42/56 = 41/36
In mixed form: 15/36
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