Add 27/9 and 54/12, Solve 3 0/9 + 4 6/12 as a fraction

Add 27/9 and 54/12

1^st number: 3 0/9, 2^nd number: 4 6/12

27/9 + 54/12 is 15/2.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36

Next, find the equivalent fraction of both fractional numbers with denominator 36
For the 1st fraction, since 9 × 4 = 36,
27/9 = 27 × 4/9 × 4 = 108/36
Likewise, for the 2nd fraction, since 12 × 3 = 36,
54/12 = 54 × 3/12 × 3 = 162/36
Add the two like fractions:
108/36 + 162/36 = 108 + 162/36 = 270/36
270/36 simplified gives 15/2
So, 27/9 + 54/12 = 15/2
In mixed form: 71/2

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