Add 10/15 and 18/7
1st number: 10/15, 2nd number: 2 4/7
10/15 + 18/7 is 68/21.
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,
10/15 = 10 × 7/15 × 7 = 70/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
18/7 = 18 × 15/7 × 15 = 270/105 - Add the two like fractions:
70/105 + 270/105 = 70 + 270/105 = 340/105 - 340/105 simplified gives 68/21
- So, 10/15 + 18/7 = 68/21
In mixed form: 35/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/15+18/7 10/15+36/7 10/30+18/7 10/15+18/14 30/15+18/7 10/15+54/7 10/45+18/7 10/15+18/21 50/15+18/7 10/15+90/7 10/75+18/7 10/15+18/35 70/15+18/7 10/15+18/49