Add 20/40 and 10/9
1st number: 20/40, 2nd number: 1 1/9
20/40 + 10/9 is 29/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
20/40 = 20 × 9/40 × 9 = 180/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
10/9 = 10 × 40/9 × 40 = 400/360 - Add the two like fractions:
180/360 + 400/360 = 180 + 400/360 = 580/360 - 580/360 simplified gives 29/18
- So, 20/40 + 10/9 = 29/18
In mixed form: 111/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+20/9 20/80+10/9 20/40+10/18 60/40+10/9 20/40+30/9 20/40+10/27 20/40+50/9 20/40+10/45 20/40+70/9 20/40+10/63