Add 72/15 and 2/7
1st number: 4 12/15, 2nd number: 2/7
72/15 + 2/7 is 178/35.
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,
72/15 = 72 × 7/15 × 7 = 504/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
2/7 = 2 × 15/7 × 15 = 30/105 - Add the two like fractions:
504/105 + 30/105 = 504 + 30/105 = 534/105 - 534/105 simplified gives 178/35
- So, 72/15 + 2/7 = 178/35
In mixed form: 53/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/15+4/7 72/30+2/7 72/15+2/14 72/15+6/7 72/45+2/7 72/15+2/21 72/15+10/7 72/75+2/7 72/15+2/35 72/15+14/7 72/15+2/49