Add 80/42 and 9/27, Solve 1 38/42 + 9/27 as a fraction

Add 80/42 and 9/27

1^st number: 1 38/42, 2^nd number: 9/27

80/42 + 9/27 is 47/21.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 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 27 × 14 = 378,
9/27 = 9 × 14/27 × 14 = 126/378
Add the two like fractions:
720/378 + 126/378 = 720 + 126/378 = 846/378
846/378 simplified gives 47/21
So, 80/42 + 9/27 = 47/21
In mixed form: 25/21

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