Add 21/3 and 18/81
1st number: 7 0/3, 2nd number: 18/81
21/3 + 18/81 is 65/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
21/3 = 21 × 27/3 × 27 = 567/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
18/81 = 18 × 1/81 × 1 = 18/81 - Add the two like fractions:
567/81 + 18/81 = 567 + 18/81 = 585/81 - 585/81 simplified gives 65/9
- So, 21/3 + 18/81 = 65/9
In mixed form: 72/9
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