Add 81/4 and 15/42
1st number: 20 1/4, 2nd number: 15/42
81/4 + 15/42 is 577/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
81/4 = 81 × 21/4 × 21 = 1701/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Add the two like fractions:
1701/84 + 30/84 = 1701 + 30/84 = 1731/84 - 1731/84 simplified gives 577/28
- So, 81/4 + 15/42 = 577/28
In mixed form: 2017/28
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