Add 18/27 and 5/42, Solve 18/27 + 5/42 as a fraction

Add 18/27 and 5/42

18/27 + 5/42 is 11/14.

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,
18/27 = 18 × 14/27 × 14 = 252/378
Likewise, for the 2nd fraction, since 42 × 9 = 378,
5/42 = 5 × 9/42 × 9 = 45/378
Add the two like fractions:
252/378 + 45/378 = 252 + 45/378 = 297/378
297/378 simplified gives 11/14
So, 18/27 + 5/42 = 11/14

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