Add 81/18 and 30/7
1st number: 4 9/18, 2nd number: 4 2/7
81/18 + 30/7 is 123/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
81/18 = 81 × 7/18 × 7 = 567/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
30/7 = 30 × 18/7 × 18 = 540/126 - Add the two like fractions:
567/126 + 540/126 = 567 + 540/126 = 1107/126 - 1107/126 simplified gives 123/14
- So, 81/18 + 30/7 = 123/14
In mixed form: 811/14
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