Add 28/80 and 4/18
28/80 + 4/18 is 103/180.
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,
4/18 = 4 × 40/18 × 40 = 160/720 - Add the two like fractions:
252/720 + 160/720 = 252 + 160/720 = 412/720 - 412/720 simplified gives 103/180
- So, 28/80 + 4/18 = 103/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/80+4/18 28/80+8/18 28/80+4/36 84/80+4/18 28/80+12/18 28/80+4/54 28/80+20/18 28/80+4/90 28/80+28/18