Add 80/42 and 28/54, Solve 1 38/42 + 28/54 as a fraction

Add 80/42 and 28/54

1^st number: 1 38/42, 2^nd number: 28/54

80/42 + 28/54 is 458/189.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 54 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 42 × 9 = 378,
80/42 = 80 × 9/42 × 9 = 720/378
Likewise, for the 2nd fraction, since 54 × 7 = 378,
28/54 = 28 × 7/54 × 7 = 196/378
Add the two like fractions:
720/378 + 196/378 = 720 + 196/378 = 916/378
916/378 simplified gives 458/189
So, 80/42 + 28/54 = 458/189
In mixed form: 280/189

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