Add 27/42 and 21/7, Solve 27/42 + 3 0/7 as a fraction

Add 27/42 and 21/7

1^st number: 27/42, 2^nd number: 3 0/7

27/42 + 21/7 is 51/14.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42

Next, find the equivalent fraction of both fractional numbers with denominator 42
For the 1st fraction, since 42 × 1 = 42,
27/42 = 27 × 1/42 × 1 = 27/42
Likewise, for the 2nd fraction, since 7 × 6 = 42,
21/7 = 21 × 6/7 × 6 = 126/42
Add the two like fractions:
27/42 + 126/42 = 27 + 126/42 = 153/42
153/42 simplified gives 51/14
So, 27/42 + 21/7 = 51/14
In mixed form: 39/14

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