Add 20/90 and 4/9
20/90 + 4/9 is 2/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
20/90 = 20 × 1/90 × 1 = 20/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
4/9 = 4 × 10/9 × 10 = 40/90 - Add the two like fractions:
20/90 + 40/90 = 20 + 40/90 = 60/90 - 60/90 simplified gives 2/3
- So, 20/90 + 4/9 = 2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+4/9 20/90+8/9 20/90+4/18 60/90+4/9 20/90+12/9 20/90+4/27 20/90+20/9 20/90+4/45 20/90+28/9 20/90+4/63