Add 3/18 and 12/20
3/18 + 12/20 is 23/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
3/18 = 3 × 10/18 × 10 = 30/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
12/20 = 12 × 9/20 × 9 = 108/180 - Add the two like fractions:
30/180 + 108/180 = 30 + 108/180 = 138/180 - 138/180 simplified gives 23/30
- So, 3/18 + 12/20 = 23/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+12/20 3/18+24/20 3/36+12/20 3/18+12/40 9/18+12/20 3/18+36/20 3/54+12/20 3/18+12/60 15/18+12/20 3/18+60/20 3/90+12/20 21/18+12/20 3/18+84/20