Add 60/80 and 12/9
1st number: 60/80, 2nd number: 1 3/9
60/80 + 12/9 is 25/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
60/80 = 60 × 9/80 × 9 = 540/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
12/9 = 12 × 80/9 × 80 = 960/720 - Add the two like fractions:
540/720 + 960/720 = 540 + 960/720 = 1500/720 - 1500/720 simplified gives 25/12
- So, 60/80 + 12/9 = 25/12
In mixed form: 21/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80+24/9 60/80+12/18 60/80+36/9 60/80+12/27 60/80+60/9 60/80+12/45 60/80+84/9 60/80+12/63