Add 3/90 and 5/20
3/90 + 5/20 is 17/60.
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,
3/90 = 3 × 2/90 × 2 = 6/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
5/20 = 5 × 9/20 × 9 = 45/180 - Add the two like fractions:
6/180 + 45/180 = 6 + 45/180 = 51/180 - 51/180 simplified gives 17/60
- So, 3/90 + 5/20 = 17/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90+5/20 3/90+10/20 3/90+5/40 9/90+5/20 3/90+15/20 3/90+5/60 15/90+5/20 3/90+25/20 21/90+5/20 3/90+35/20