Add 27/10 and 42/15
1st number: 2 7/10, 2nd number: 2 12/15
27/10 + 42/15 is 11/2.
Steps for adding fractions
- 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,
27/10 = 27 × 3/10 × 3 = 81/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
42/15 = 42 × 2/15 × 2 = 84/30 - Add the two like fractions:
81/30 + 84/30 = 81 + 84/30 = 165/30 - 165/30 simplified gives 11/2
- So, 27/10 + 42/15 = 11/2
In mixed form: 51/2
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