Add 20/90 and 1/18
20/90 + 1/18 is 5/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 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 18 × 5 = 90,
1/18 = 1 × 5/18 × 5 = 5/90 - Add the two like fractions:
20/90 + 5/90 = 20 + 5/90 = 25/90 - 25/90 simplified gives 5/18
- So, 20/90 + 1/18 = 5/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+1/18 20/90+2/18 20/90+1/36 60/90+1/18 20/90+3/18 20/90+1/54 20/90+5/18 20/90+1/90 20/90+7/18