Add 18/15 and 42/27, Solve 1 3/15 + 1 15/27 as a fraction

Add 18/15 and 42/27

1^st number: 1 3/15, 2^nd number: 1 15/27

18/15 + 42/27 is 124/45.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135

Next, find the equivalent fraction of both fractional numbers with denominator 135
For the 1st fraction, since 15 × 9 = 135,
18/15 = 18 × 9/15 × 9 = 162/135
Likewise, for the 2nd fraction, since 27 × 5 = 135,
42/27 = 42 × 5/27 × 5 = 210/135
Add the two like fractions:
162/135 + 210/135 = 162 + 210/135 = 372/135
372/135 simplified gives 124/45
So, 18/15 + 42/27 = 124/45
In mixed form: 234/45

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