Add 21/15 and 27/30
1st number: 1 6/15, 2nd number: 27/30
21/15 + 27/30 is 23/10.
Steps for adding fractions
- 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,
21/15 = 21 × 2/15 × 2 = 42/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
27/30 = 27 × 1/30 × 1 = 27/30 - Add the two like fractions:
42/30 + 27/30 = 42 + 27/30 = 69/30 - 69/30 simplified gives 23/10
- So, 21/15 + 27/30 = 23/10
In mixed form: 23/10
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