Add 8/18 and 18/15
1st number: 8/18, 2nd number: 1 3/15
8/18 + 18/15 is 74/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
8/18 = 8 × 5/18 × 5 = 40/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
18/15 = 18 × 6/15 × 6 = 108/90 - Add the two like fractions:
40/90 + 108/90 = 40 + 108/90 = 148/90 - 148/90 simplified gives 74/45
- So, 8/18 + 18/15 = 74/45
In mixed form: 129/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18+18/15 8/18+36/15 8/36+18/15 8/18+18/30 24/18+18/15 8/18+54/15 8/54+18/15 8/18+18/45 40/18+18/15 8/18+90/15 8/90+18/15 8/18+18/75 56/18+18/15