Add 12/20 and 12/18
12/20 + 12/18 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
12/20 = 12 × 9/20 × 9 = 108/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
12/18 = 12 × 10/18 × 10 = 120/180 - Add the two like fractions:
108/180 + 120/180 = 108 + 120/180 = 228/180 - 228/180 simplified gives 19/15
- So, 12/20 + 12/18 = 19/15
In mixed form: 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+12/18 12/20+24/18 12/40+12/18 12/20+12/36 36/20+12/18 12/20+36/18 12/60+12/18 12/20+12/54 60/20+12/18 12/20+60/18 12/20+12/90 84/20+12/18 12/20+84/18