Add 81/3 and 54/7
1st number: 27 0/3, 2nd number: 7 5/7
81/3 + 54/7 is 243/7.
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,
81/3 = 81 × 7/3 × 7 = 567/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
54/7 = 54 × 3/7 × 3 = 162/21 - Add the two like fractions:
567/21 + 162/21 = 567 + 162/21 = 729/21 - 729/21 simplified gives 243/7
- So, 81/3 + 54/7 = 243/7
In mixed form: 345/7
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