Add 81/60 and 27/42
1st number: 1 21/60, 2nd number: 27/42
81/60 + 27/42 is 279/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 42 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
81/60 = 81 × 7/60 × 7 = 567/420 - Likewise, for the 2nd fraction, since 42 × 10 = 420,
27/42 = 27 × 10/42 × 10 = 270/420 - Add the two like fractions:
567/420 + 270/420 = 567 + 270/420 = 837/420 - 837/420 simplified gives 279/140
- So, 81/60 + 27/42 = 279/140
In mixed form: 1139/140
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