Add 20/35 and 12/9
1st number: 20/35, 2nd number: 1 3/9
20/35 + 12/9 is 40/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 9 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
20/35 = 20 × 9/35 × 9 = 180/315 - Likewise, for the 2nd fraction, since 9 × 35 = 315,
12/9 = 12 × 35/9 × 35 = 420/315 - Add the two like fractions:
180/315 + 420/315 = 180 + 420/315 = 600/315 - 600/315 simplified gives 40/21
- So, 20/35 + 12/9 = 40/21
In mixed form: 119/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/35+12/9 20/35+24/9 20/70+12/9 20/35+12/18 60/35+12/9 20/35+36/9 20/35+12/27 20/35+60/9 20/35+12/45 20/35+84/9 20/35+12/63