Add 27/21 and 81/60
1st number: 1 6/21, 2nd number: 1 21/60
27/21 + 81/60 is 369/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
27/21 = 27 × 20/21 × 20 = 540/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
81/60 = 81 × 7/60 × 7 = 567/420 - Add the two like fractions:
540/420 + 567/420 = 540 + 567/420 = 1107/420 - 1107/420 simplified gives 369/140
- So, 27/21 + 81/60 = 369/140
In mixed form: 289/140
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