Add 80/60 and 10/90
1st number: 1 20/60, 2nd number: 10/90
80/60 + 10/90 is 13/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 60 × 3 = 180,
80/60 = 80 × 3/60 × 3 = 240/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
10/90 = 10 × 2/90 × 2 = 20/180 - Add the two like fractions:
240/180 + 20/180 = 240 + 20/180 = 260/180 - 260/180 simplified gives 13/9
- So, 80/60 + 10/90 = 13/9
In mixed form: 14/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60+20/90 80/60+30/90 80/60+50/90 80/60+70/90