Add 81/60 and 12/18
1st number: 1 21/60, 2nd number: 12/18
81/60 + 12/18 is 121/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
81/60 = 81 × 3/60 × 3 = 243/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
12/18 = 12 × 10/18 × 10 = 120/180 - Add the two like fractions:
243/180 + 120/180 = 243 + 120/180 = 363/180 - 363/180 simplified gives 121/60
- So, 81/60 + 12/18 = 121/60
In mixed form: 21/60
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