Add 81/7 and 21/54
1st number: 11 4/7, 2nd number: 21/54
81/7 + 21/54 is 1507/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 7 × 54 = 378,
81/7 = 81 × 54/7 × 54 = 4374/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378 - Add the two like fractions:
4374/378 + 147/378 = 4374 + 147/378 = 4521/378 - 4521/378 simplified gives 1507/126
- So, 81/7 + 21/54 = 1507/126
In mixed form: 11121/126
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