Add 42/15 and 28/54, Solve 2 12/15 + 28/54 as a fraction

Add 42/15 and 28/54

1^st number: 2 12/15, 2^nd number: 28/54

42/15 + 28/54 is 448/135.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 15 × 18 = 270,
42/15 = 42 × 18/15 × 18 = 756/270
Likewise, for the 2nd fraction, since 54 × 5 = 270,
28/54 = 28 × 5/54 × 5 = 140/270
Add the two like fractions:
756/270 + 140/270 = 756 + 140/270 = 896/270
896/270 simplified gives 448/135
So, 42/15 + 28/54 = 448/135
In mixed form: 343/135

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