Add 72/81 and 21/6
1st number: 72/81, 2nd number: 3 3/6
72/81 + 21/6 is 79/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 6 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
72/81 = 72 × 2/81 × 2 = 144/162 - Likewise, for the 2nd fraction, since 6 × 27 = 162,
21/6 = 21 × 27/6 × 27 = 567/162 - Add the two like fractions:
144/162 + 567/162 = 144 + 567/162 = 711/162 - 711/162 simplified gives 79/18
- So, 72/81 + 21/6 = 79/18
In mixed form: 47/18
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