Add 12/9 and 27/40
1st number: 1 3/9, 2nd number: 27/40
12/9 + 27/40 is 241/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 9 × 40 = 360,
12/9 = 12 × 40/9 × 40 = 480/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
27/40 = 27 × 9/40 × 9 = 243/360 - Add the two like fractions:
480/360 + 243/360 = 480 + 243/360 = 723/360 - 723/360 simplified gives 241/120
- So, 12/9 + 27/40 = 241/120
In mixed form: 21/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9+27/40 12/9+54/40 12/18+27/40 12/9+27/80 36/9+27/40 12/9+81/40 12/27+27/40 60/9+27/40 12/45+27/40 84/9+27/40 12/63+27/40