Add 72/42 and 27/81
1st number: 1 30/42, 2nd number: 27/81
72/42 + 27/81 is 43/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 42 × 27 = 1134,
72/42 = 72 × 27/42 × 27 = 1944/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
27/81 = 27 × 14/81 × 14 = 378/1134 - Add the two like fractions:
1944/1134 + 378/1134 = 1944 + 378/1134 = 2322/1134 - 2322/1134 simplified gives 43/21
- So, 72/42 + 27/81 = 43/21
In mixed form: 21/21
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