Add 12/18 and 4/5
12/18 + 4/5 is 22/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 5 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 5 × 18 = 90,
4/5 = 4 × 18/5 × 18 = 72/90 - Add the two like fractions:
60/90 + 72/90 = 60 + 72/90 = 132/90 - 132/90 simplified gives 22/15
- So, 12/18 + 4/5 = 22/15
In mixed form: 17/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+4/5 12/18+8/5 12/36+4/5 12/18+4/10 36/18+4/5 12/18+12/5 12/54+4/5 12/18+4/15 60/18+4/5 12/18+20/5 12/90+4/5 12/18+4/25 84/18+4/5 12/18+28/5 12/18+4/35