Add 27/42 and 81/54
1st number: 27/42, 2nd number: 1 27/54
27/42 + 81/54 is 15/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 42 × 9 = 378,
27/42 = 27 × 9/42 × 9 = 243/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
81/54 = 81 × 7/54 × 7 = 567/378 - Add the two like fractions:
243/378 + 567/378 = 243 + 567/378 = 810/378 - 810/378 simplified gives 15/7
- So, 27/42 + 81/54 = 15/7
In mixed form: 21/7
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