Add 72/81 and 45/42
1st number: 72/81, 2nd number: 1 3/42
72/81 + 45/42 is 247/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 42 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 81 × 14 = 1134,
72/81 = 72 × 14/81 × 14 = 1008/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
45/42 = 45 × 27/42 × 27 = 1215/1134 - Add the two like fractions:
1008/1134 + 1215/1134 = 1008 + 1215/1134 = 2223/1134 - 2223/1134 simplified gives 247/126
- So, 72/81 + 45/42 = 247/126
In mixed form: 1121/126
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