Add 28/15 and 1/7
1st number: 1 13/15, 2nd number: 1/7
28/15 + 1/7 is 211/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
28/15 = 28 × 7/15 × 7 = 196/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
1/7 = 1 × 15/7 × 15 = 15/105 - Add the two like fractions:
196/105 + 15/105 = 196 + 15/105 = 211/105 - So, 28/15 + 1/7 = 211/105
In mixed form: 21/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/15+1/7 28/15+2/7 28/30+1/7 28/15+1/14 84/15+1/7 28/15+3/7 28/45+1/7 28/15+1/21 28/15+5/7 28/75+1/7 28/15+1/35 28/15+1/49