Add 81/7 and 45/18
1st number: 11 4/7, 2nd number: 2 9/18
81/7 + 45/18 is 197/14.
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,
45/18 = 45 × 7/18 × 7 = 315/126 - Add the two like fractions:
1458/126 + 315/126 = 1458 + 315/126 = 1773/126 - 1773/126 simplified gives 197/14
- So, 81/7 + 45/18 = 197/14
In mixed form: 141/14
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