Add 90/27 and 20/81
1st number: 3 9/27, 2nd number: 20/81
90/27 + 20/81 is 290/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 27 × 3 = 81,
90/27 = 90 × 3/27 × 3 = 270/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
20/81 = 20 × 1/81 × 1 = 20/81 - Add the two like fractions:
270/81 + 20/81 = 270 + 20/81 = 290/81 - So, 90/27 + 20/81 = 290/81
In mixed form: 347/81
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