Add 72/9 and 81/20
1st number: 8 0/9, 2nd number: 4 1/20
72/9 + 81/20 is 241/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 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 20 × 9 = 180,
81/20 = 81 × 9/20 × 9 = 729/180 - Add the two like fractions:
1440/180 + 729/180 = 1440 + 729/180 = 2169/180 - 2169/180 simplified gives 241/20
- So, 72/9 + 81/20 = 241/20
In mixed form: 121/20
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