Add 72/9 and 81/90
1st number: 8 0/9, 2nd number: 81/90
72/9 + 81/90 is 89/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
72/9 = 72 × 10/9 × 10 = 720/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Add the two like fractions:
720/90 + 81/90 = 720 + 81/90 = 801/90 - 801/90 simplified gives 89/10
- So, 72/9 + 81/90 = 89/10
In mixed form: 89/10
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