Add 12/18 and 8/15
12/18 + 8/15 is 6/5.
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,
12/18 = 12 × 5/18 × 5 = 60/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
8/15 = 8 × 6/15 × 6 = 48/90 - Add the two like fractions:
60/90 + 48/90 = 60 + 48/90 = 108/90 - 108/90 simplified gives 6/5
- So, 12/18 + 8/15 = 6/5
In mixed form: 11/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+8/15 12/18+16/15 12/36+8/15 12/18+8/30 36/18+8/15 12/18+24/15 12/54+8/15 12/18+8/45 60/18+8/15 12/18+40/15 12/90+8/15 12/18+8/75 84/18+8/15 12/18+56/15