Add 81/42 and 81/84
1st number: 1 39/42, 2nd number: 81/84
81/42 + 81/84 is 81/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
81/42 = 81 × 2/42 × 2 = 162/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
81/84 = 81 × 1/84 × 1 = 81/84 - Add the two like fractions:
162/84 + 81/84 = 162 + 81/84 = 243/84 - 243/84 simplified gives 81/28
- So, 81/42 + 81/84 = 81/28
In mixed form: 225/28
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Related: 81/84+81/84