Add 72/20 and 81/10
1st number: 3 12/20, 2nd number: 8 1/10
72/20 + 81/10 is 117/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
72/20 = 72 × 1/20 × 1 = 72/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
81/10 = 81 × 2/10 × 2 = 162/20 - Add the two like fractions:
72/20 + 162/20 = 72 + 162/20 = 234/20 - 234/20 simplified gives 117/10
- So, 72/20 + 81/10 = 117/10
In mixed form: 117/10
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