Add 81/3 and 4/21
1st number: 27 0/3, 2nd number: 4/21
81/3 + 4/21 is 571/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 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 21 × 1 = 21,
4/21 = 4 × 1/21 × 1 = 4/21 - Add the two like fractions:
567/21 + 4/21 = 567 + 4/21 = 571/21 - So, 81/3 + 4/21 = 571/21
In mixed form: 274/21
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