Add 9/28 and 81/42
1st number: 9/28, 2nd number: 1 39/42
9/28 + 81/42 is 9/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
9/28 = 9 × 3/28 × 3 = 27/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
81/42 = 81 × 2/42 × 2 = 162/84 - Add the two like fractions:
27/84 + 162/84 = 27 + 162/84 = 189/84 - 189/84 simplified gives 9/4
- So, 9/28 + 81/42 = 9/4
In mixed form: 21/4
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