Add 12/9 and 72/81
1st number: 1 3/9, 2nd number: 72/81
12/9 + 72/81 is 20/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
12/9 = 12 × 9/9 × 9 = 108/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
72/81 = 72 × 1/81 × 1 = 72/81 - Add the two like fractions:
108/81 + 72/81 = 108 + 72/81 = 180/81 - 180/81 simplified gives 20/9
- So, 12/9 + 72/81 = 20/9
In mixed form: 22/9
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