Add 28/80 and 5/9
28/80 + 5/9 is 163/180.
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,
28/80 = 28 × 9/80 × 9 = 252/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
5/9 = 5 × 80/9 × 80 = 400/720 - Add the two like fractions:
252/720 + 400/720 = 252 + 400/720 = 652/720 - 652/720 simplified gives 163/180
- So, 28/80 + 5/9 = 163/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/80+5/9 28/80+10/9 28/80+5/18 84/80+5/9 28/80+15/9 28/80+5/27 28/80+25/9 28/80+5/45 28/80+35/9 28/80+5/63