Add 20/7 and 42/54, Solve 2 6/7 + 42/54 as a fraction

Add 20/7 and 42/54

1^st number: 2 6/7, 2^nd number: 42/54

20/7 + 42/54 is 229/63.

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,
42/54 = 42 × 7/54 × 7 = 294/378
Add the two like fractions:
1080/378 + 294/378 = 1080 + 294/378 = 1374/378
1374/378 simplified gives 229/63
So, 20/7 + 42/54 = 229/63
In mixed form: 340/63

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