Add 21/10 and 9/15, Solve 2 1/10 + 9/15 as a fraction

Add 21/10 and 9/15

1^st number: 2 1/10, 2^nd number: 9/15

21/10 + 9/15 is 27/10.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 15 is 30

Next, find the equivalent fraction of both fractional numbers with denominator 30
For the 1st fraction, since 10 × 3 = 30,
21/10 = 21 × 3/10 × 3 = 63/30
Likewise, for the 2nd fraction, since 15 × 2 = 30,
9/15 = 9 × 2/15 × 2 = 18/30
Add the two like fractions:
63/30 + 18/30 = 63 + 18/30 = 81/30
81/30 simplified gives 27/10
So, 21/10 + 9/15 = 27/10
In mixed form: 27/10

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