Add 72/9 and 81/60
1st number: 8 0/9, 2nd number: 1 21/60
72/9 + 81/60 is 187/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
72/9 = 72 × 20/9 × 20 = 1440/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
81/60 = 81 × 3/60 × 3 = 243/180 - Add the two like fractions:
1440/180 + 243/180 = 1440 + 243/180 = 1683/180 - 1683/180 simplified gives 187/20
- So, 72/9 + 81/60 = 187/20
In mixed form: 97/20
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