Add 81/7 and 12/18
1st number: 11 4/7, 2nd number: 12/18
81/7 + 12/18 is 257/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
81/7 = 81 × 18/7 × 18 = 1458/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
12/18 = 12 × 7/18 × 7 = 84/126 - Add the two like fractions:
1458/126 + 84/126 = 1458 + 84/126 = 1542/126 - 1542/126 simplified gives 257/21
- So, 81/7 + 12/18 = 257/21
In mixed form: 125/21
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