Add 7/18 and 80/20
1st number: 7/18, 2nd number: 4 0/20
7/18 + 80/20 is 79/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
7/18 = 7 × 10/18 × 10 = 70/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
80/20 = 80 × 9/20 × 9 = 720/180 - Add the two like fractions:
70/180 + 720/180 = 70 + 720/180 = 790/180 - 790/180 simplified gives 79/18
- So, 7/18 + 80/20 = 79/18
In mixed form: 47/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18+80/20 7/36+80/20 7/18+80/40 21/18+80/20 7/54+80/20 7/18+80/60 35/18+80/20 7/90+80/20 49/18+80/20