Add 5/18 and 4/20
5/18 + 4/20 is 43/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
5/18 = 5 × 10/18 × 10 = 50/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Add the two like fractions:
50/180 + 36/180 = 50 + 36/180 = 86/180 - 86/180 simplified gives 43/90
- So, 5/18 + 4/20 = 43/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/18+4/20 5/18+8/20 5/36+4/20 5/18+4/40 15/18+4/20 5/18+12/20 5/54+4/20 5/18+4/60 25/18+4/20 5/90+4/20 35/18+4/20 5/18+28/20