Add 27/15 and 81/30, Solve 1 12/15 + 2 21/30 as a fraction

Add 27/15 and 81/30

1^st number: 1 12/15, 2^nd number: 2 21/30

27/15 + 81/30 is 9/2.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 15 × 2 = 30,
27/15 = 27 × 2/15 × 2 = 54/30
Likewise, for the 2nd fraction, since 30 × 1 = 30,
81/30 = 81 × 1/30 × 1 = 81/30
Add the two like fractions:
54/30 + 81/30 = 54 + 81/30 = 135/30
135/30 simplified gives 9/2
So, 27/15 + 81/30 = 9/2
In mixed form: 41/2

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