Add 1/2 and 18/15
1st number: 1/2, 2nd number: 1 3/15
1/2 + 18/15 is 17/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
1/2 = 1 × 15/2 × 15 = 15/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
18/15 = 18 × 2/15 × 2 = 36/30 - Add the two like fractions:
15/30 + 36/30 = 15 + 36/30 = 51/30 - 51/30 simplified gives 17/10
- So, 1/2 + 18/15 = 17/10
In mixed form: 17/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/2+36/15 1/4+18/15 1/2+18/30 3/2+18/15 1/2+54/15 1/6+18/15 1/2+18/45 5/2+18/15 1/2+90/15 1/10+18/15 1/2+18/75 7/2+18/15 1/14+18/15