Add 20/10 and 12/9
1st number: 2 0/10, 2nd number: 1 3/9
20/10 + 12/9 is 10/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
20/10 = 20 × 9/10 × 9 = 180/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
12/9 = 12 × 10/9 × 10 = 120/90 - Add the two like fractions:
180/90 + 120/90 = 180 + 120/90 = 300/90 - 300/90 simplified gives 10/3
- So, 20/10 + 12/9 = 10/3
In mixed form: 31/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/10+12/9 20/10+24/9 20/10+12/18 60/10+12/9 20/10+36/9 20/30+12/9 20/10+12/27 20/10+60/9 20/50+12/9 20/10+12/45 20/10+84/9 20/70+12/9 20/10+12/63