Add 20/80 and 7/9
20/80 + 7/9 is 37/36.
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,
20/80 = 20 × 9/80 × 9 = 180/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
7/9 = 7 × 80/9 × 80 = 560/720 - Add the two like fractions:
180/720 + 560/720 = 180 + 560/720 = 740/720 - 740/720 simplified gives 37/36
- So, 20/80 + 7/9 = 37/36
In mixed form: 11/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/80+7/9 20/80+14/9 20/80+7/18 60/80+7/9 20/80+21/9 20/80+7/27 20/80+35/9 20/80+7/45 20/80+49/9 20/80+7/63