Add 12/9 and 1/20
1st number: 1 3/9, 2nd number: 1/20
12/9 + 1/20 is 83/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 9 × 20 = 180,
12/9 = 12 × 20/9 × 20 = 240/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
1/20 = 1 × 9/20 × 9 = 9/180 - Add the two like fractions:
240/180 + 9/180 = 240 + 9/180 = 249/180 - 249/180 simplified gives 83/60
- So, 12/9 + 1/20 = 83/60
In mixed form: 123/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9+1/20 12/9+2/20 12/18+1/20 12/9+1/40 36/9+1/20 12/9+3/20 12/27+1/20 12/9+1/60 60/9+1/20 12/9+5/20 12/45+1/20 84/9+1/20 12/9+7/20 12/63+1/20