Add 27/21 and 18/5
1st number: 1 6/21, 2nd number: 3 3/5
27/21 + 18/5 is 171/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
27/21 = 27 × 5/21 × 5 = 135/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
18/5 = 18 × 21/5 × 21 = 378/105 - Add the two like fractions:
135/105 + 378/105 = 135 + 378/105 = 513/105 - 513/105 simplified gives 171/35
- So, 27/21 + 18/5 = 171/35
In mixed form: 431/35
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