Add 72/60 and 21/9
1st number: 1 12/60, 2nd number: 2 3/9
72/60 + 21/9 is 53/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
72/60 = 72 × 3/60 × 3 = 216/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
21/9 = 21 × 20/9 × 20 = 420/180 - Add the two like fractions:
216/180 + 420/180 = 216 + 420/180 = 636/180 - 636/180 simplified gives 53/15
- So, 72/60 + 21/9 = 53/15
In mixed form: 38/15
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