Add 18/2 and 15/7
1st number: 9 0/2, 2nd number: 2 1/7
18/2 + 15/7 is 78/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
18/2 = 18 × 7/2 × 7 = 126/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
15/7 = 15 × 2/7 × 2 = 30/14 - Add the two like fractions:
126/14 + 30/14 = 126 + 30/14 = 156/14 - 156/14 simplified gives 78/7
- So, 18/2 + 15/7 = 78/7
In mixed form: 111/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2+15/7 18/2+30/7 18/4+15/7 18/2+15/14 54/2+15/7 18/2+45/7 18/6+15/7 18/2+15/21 90/2+15/7 18/2+75/7 18/10+15/7 18/2+15/35 18/14+15/7 18/2+15/49