Add 25/15 and 18/7
1st number: 1 10/15, 2nd number: 2 4/7
25/15 + 18/7 is 89/21.
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,
25/15 = 25 × 7/15 × 7 = 175/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
18/7 = 18 × 15/7 × 15 = 270/105 - Add the two like fractions:
175/105 + 270/105 = 175 + 270/105 = 445/105 - 445/105 simplified gives 89/21
- So, 25/15 + 18/7 = 89/21
In mixed form: 45/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/15+18/7 25/15+36/7 25/30+18/7 25/15+18/14 75/15+18/7 25/15+54/7 25/45+18/7 25/15+18/21 25/15+90/7 25/75+18/7 25/15+18/35 25/15+18/49