Add 21/27 and 20/56
21/27 + 20/56 is 143/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 56 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 27 × 56 = 1512,
21/27 = 21 × 56/27 × 56 = 1176/1512 - Likewise, for the 2nd fraction, since 56 × 27 = 1512,
20/56 = 20 × 27/56 × 27 = 540/1512 - Add the two like fractions:
1176/1512 + 540/1512 = 1176 + 540/1512 = 1716/1512 - 1716/1512 simplified gives 143/126
- So, 21/27 + 20/56 = 143/126
In mixed form: 117/126
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