Add 12/9 and 30/80
1st number: 1 3/9, 2nd number: 30/80
12/9 + 30/80 is 41/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
12/9 = 12 × 80/9 × 80 = 960/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
30/80 = 30 × 9/80 × 9 = 270/720 - Add the two like fractions:
960/720 + 270/720 = 960 + 270/720 = 1230/720 - 1230/720 simplified gives 41/24
- So, 12/9 + 30/80 = 41/24
In mixed form: 117/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9+30/80 12/9+60/80 12/18+30/80 36/9+30/80 12/9+90/80 12/27+30/80 60/9+30/80 12/45+30/80 84/9+30/80 12/63+30/80