Add 28/7 and 15/54, Solve 4 0/7 + 15/54 as a fraction

Add 28/7 and 15/54

1^st number: 4 0/7, 2^nd number: 15/54

28/7 + 15/54 is 77/18.

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,
28/7 = 28 × 54/7 × 54 = 1512/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
15/54 = 15 × 7/54 × 7 = 105/378
Add the two like fractions:
1512/378 + 105/378 = 1512 + 105/378 = 1617/378
1617/378 simplified gives 77/18
So, 28/7 + 15/54 = 77/18
In mixed form: 45/18

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