Add 20/90 and 5/10
20/90 + 5/10 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 10 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 10 × 9 = 90,
5/10 = 5 × 9/10 × 9 = 45/90 - Add the two like fractions:
20/90 + 45/90 = 20 + 45/90 = 65/90 - 65/90 simplified gives 13/18
- So, 20/90 + 5/10 = 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/90+5/10 20/90+5/20 60/90+5/10 20/90+15/10 20/90+5/30 20/90+25/10 20/90+5/50 20/90+35/10 20/90+5/70