Add 4/5 and 27/21
1st number: 4/5, 2nd number: 1 6/21
4/5 + 27/21 is 73/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
4/5 = 4 × 21/5 × 21 = 84/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
27/21 = 27 × 5/21 × 5 = 135/105 - Add the two like fractions:
84/105 + 135/105 = 84 + 135/105 = 219/105 - 219/105 simplified gives 73/35
- So, 4/5 + 27/21 = 73/35
In mixed form: 23/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5+27/21 4/5+54/21 4/10+27/21 4/5+27/42 12/5+27/21 4/5+81/21 4/15+27/21 4/5+27/63 20/5+27/21 4/25+27/21 28/5+27/21 4/35+27/21