Add 27/30 and 42/27, Solve 27/30 + 1 15/27 as a fraction

Add 27/30 and 42/27

1^st number: 27/30, 2^nd number: 1 15/27

27/30 + 42/27 is 221/90.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 27 is 270

Next, find the equivalent fraction of both fractional numbers with denominator 270
For the 1st fraction, since 30 × 9 = 270,
27/30 = 27 × 9/30 × 9 = 243/270
Likewise, for the 2nd fraction, since 27 × 10 = 270,
42/27 = 42 × 10/27 × 10 = 420/270
Add the two like fractions:
243/270 + 420/270 = 243 + 420/270 = 663/270
663/270 simplified gives 221/90
So, 27/30 + 42/27 = 221/90
In mixed form: 241/90

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