Add 4/18 and 20/80
4/18 + 20/80 is 17/36.
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,
4/18 = 4 × 40/18 × 40 = 160/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
20/80 = 20 × 9/80 × 9 = 180/720 - Add the two like fractions:
160/720 + 180/720 = 160 + 180/720 = 340/720 - 340/720 simplified gives 17/36
- So, 4/18 + 20/80 = 17/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18+20/80 4/18+40/80 4/36+20/80 12/18+20/80 4/18+60/80 4/54+20/80 20/18+20/80 4/90+20/80 28/18+20/80