Add 81/60 and 15/12
1st number: 1 21/60, 2nd number: 1 3/12
81/60 + 15/12 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 60 × 1 = 60,
81/60 = 81 × 1/60 × 1 = 81/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
15/12 = 15 × 5/12 × 5 = 75/60 - Add the two like fractions:
81/60 + 75/60 = 81 + 75/60 = 156/60 - 156/60 simplified gives 13/5
- So, 81/60 + 15/12 = 13/5
In mixed form: 23/5
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