Add 12/20 and 35/18
1st number: 12/20, 2nd number: 1 17/18
12/20 + 35/18 is 229/90.
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,
35/18 = 35 × 10/18 × 10 = 350/180 - Add the two like fractions:
108/180 + 350/180 = 108 + 350/180 = 458/180 - 458/180 simplified gives 229/90
- So, 12/20 + 35/18 = 229/90
In mixed form: 249/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+35/18 12/20+70/18 12/40+35/18 12/20+35/36 36/20+35/18 12/60+35/18 12/20+35/54 60/20+35/18 12/20+35/90 84/20+35/18