Add 56/3 and 81/7
1st number: 18 2/3, 2nd number: 11 4/7
56/3 + 81/7 is 635/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
56/3 = 56 × 7/3 × 7 = 392/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
81/7 = 81 × 3/7 × 3 = 243/21 - Add the two like fractions:
392/21 + 243/21 = 392 + 243/21 = 635/21 - So, 56/3 + 81/7 = 635/21
In mixed form: 305/21
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