Add 80/20 and 7/90
1st number: 4 0/20, 2nd number: 7/90
80/20 + 7/90 is 367/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
80/20 = 80 × 9/20 × 9 = 720/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
7/90 = 7 × 2/90 × 2 = 14/180 - Add the two like fractions:
720/180 + 14/180 = 720 + 14/180 = 734/180 - 734/180 simplified gives 367/90
- So, 80/20 + 7/90 = 367/90
In mixed form: 47/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20+14/90 80/40+7/90 80/20+21/90 80/60+7/90 80/20+35/90 80/20+49/90