Add 81/18 and 30/28
1st number: 4 9/18, 2nd number: 1 2/28
81/18 + 30/28 is 39/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
81/18 = 81 × 14/18 × 14 = 1134/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
30/28 = 30 × 9/28 × 9 = 270/252 - Add the two like fractions:
1134/252 + 270/252 = 1134 + 270/252 = 1404/252 - 1404/252 simplified gives 39/7
- So, 81/18 + 30/28 = 39/7
In mixed form: 54/7
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