Add 20/7 and 21/54
1st number: 2 6/7, 2nd number: 21/54
20/7 + 21/54 is 409/126.
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,
20/7 = 20 × 54/7 × 54 = 1080/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
21/54 = 21 × 7/54 × 7 = 147/378 - Add the two like fractions:
1080/378 + 147/378 = 1080 + 147/378 = 1227/378 - 1227/378 simplified gives 409/126
- So, 20/7 + 21/54 = 409/126
In mixed form: 331/126
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