Add 8/54 and 28/21, Solve 8/54 + 1 7/21 as a fraction

Add 8/54 and 28/21

1^st number: 8/54, 2^nd number: 1 7/21

8/54 + 28/21 is 40/27.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 21 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 54 × 7 = 378,
8/54 = 8 × 7/54 × 7 = 56/378
Likewise, for the 2nd fraction, since 21 × 18 = 378,
28/21 = 28 × 18/21 × 18 = 504/378
Add the two like fractions:
56/378 + 504/378 = 56 + 504/378 = 560/378
560/378 simplified gives 40/27
So, 8/54 + 28/21 = 40/27
In mixed form: 113/27

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