Add 40/18 and 28/80
1st number: 2 4/18, 2nd number: 28/80
40/18 + 28/80 is 463/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
40/18 = 40 × 40/18 × 40 = 1600/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
28/80 = 28 × 9/80 × 9 = 252/720 - Add the two like fractions:
1600/720 + 252/720 = 1600 + 252/720 = 1852/720 - 1852/720 simplified gives 463/180
- So, 40/18 + 28/80 = 463/180
In mixed form: 2103/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18+28/80 40/18+56/80 40/36+28/80 40/18+84/80 40/54+28/80 40/90+28/80