Add 10/54 and 80/42, Solve 10/54 + 1 38/42 as a fraction

Add 10/54 and 80/42

1^st number: 10/54, 2^nd number: 1 38/42

10/54 + 80/42 is 395/189.

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

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 54 × 7 = 378,
10/54 = 10 × 7/54 × 7 = 70/378
Likewise, for the 2nd fraction, since 42 × 9 = 378,
80/42 = 80 × 9/42 × 9 = 720/378
Add the two like fractions:
70/378 + 720/378 = 70 + 720/378 = 790/378
790/378 simplified gives 395/189
So, 10/54 + 80/42 = 395/189
In mixed form: 217/189

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