Add 20/21 and 81/56
1st number: 20/21, 2nd number: 1 25/56
20/21 + 81/56 is 403/168.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
20/21 = 20 × 8/21 × 8 = 160/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
81/56 = 81 × 3/56 × 3 = 243/168 - Add the two like fractions:
160/168 + 243/168 = 160 + 243/168 = 403/168 - So, 20/21 + 81/56 = 403/168
In mixed form: 267/168
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