Add 8/18 and 12/15
8/18 + 12/15 is 56/45.
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,
12/15 = 12 × 6/15 × 6 = 72/90 - Add the two like fractions:
40/90 + 72/90 = 40 + 72/90 = 112/90 - 112/90 simplified gives 56/45
- So, 8/18 + 12/15 = 56/45
In mixed form: 111/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/18+12/15 8/18+24/15 8/36+12/15 8/18+12/30 24/18+12/15 8/18+36/15 8/54+12/15 8/18+12/45 40/18+12/15 8/18+60/15 8/90+12/15 8/18+12/75 56/18+12/15 8/18+84/15