Add 81/4 and 18/42
1st number: 20 1/4, 2nd number: 18/42
81/4 + 18/42 is 579/28.
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,
18/42 = 18 × 2/42 × 2 = 36/84 - Add the two like fractions:
1701/84 + 36/84 = 1701 + 36/84 = 1737/84 - 1737/84 simplified gives 579/28
- So, 81/4 + 18/42 = 579/28
In mixed form: 2019/28
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