Add 21/6 and 36/81
1st number: 3 3/6, 2nd number: 36/81
21/6 + 36/81 is 71/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 6 × 27 = 162,
21/6 = 21 × 27/6 × 27 = 567/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
36/81 = 36 × 2/81 × 2 = 72/162 - Add the two like fractions:
567/162 + 72/162 = 567 + 72/162 = 639/162 - 639/162 simplified gives 71/18
- So, 21/6 + 36/81 = 71/18
In mixed form: 317/18
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