Add 20/90 and 6/20
20/90 + 6/20 is 47/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
6/20 = 6 × 9/20 × 9 = 54/180 - Add the two like fractions:
40/180 + 54/180 = 40 + 54/180 = 94/180 - 94/180 simplified gives 47/90
- So, 20/90 + 6/20 = 47/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+6/20 20/90+12/20 20/90+6/40 60/90+6/20 20/90+18/20 20/90+6/60 20/90+30/20 20/90+42/20