Add 28/80 and 5/18
28/80 + 5/18 is 113/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 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 18 × 40 = 720,
5/18 = 5 × 40/18 × 40 = 200/720 - Add the two like fractions:
252/720 + 200/720 = 252 + 200/720 = 452/720 - 452/720 simplified gives 113/180
- So, 28/80 + 5/18 = 113/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/80+5/18 28/80+10/18 28/80+5/36 84/80+5/18 28/80+15/18 28/80+5/54 28/80+25/18 28/80+5/90 28/80+35/18