Add 72/27 and 15/42, Solve 2 18/27 + 15/42 as a fraction

Add 72/27 and 15/42

1^st number: 2 18/27, 2^nd number: 15/42

72/27 + 15/42 is 127/42.

Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 27 × 14 = 378,
72/27 = 72 × 14/27 × 14 = 1008/378
Likewise, for the 2nd fraction, since 42 × 9 = 378,
15/42 = 15 × 9/42 × 9 = 135/378
Add the two like fractions:
1008/378 + 135/378 = 1008 + 135/378 = 1143/378
1143/378 simplified gives 127/42
So, 72/27 + 15/42 = 127/42
In mixed form: 31/42

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