Add 9/20 and 10/90
9/20 + 10/90 is 101/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
9/20 = 9 × 9/20 × 9 = 81/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
10/90 = 10 × 2/90 × 2 = 20/180 - Add the two like fractions:
81/180 + 20/180 = 81 + 20/180 = 101/180 - So, 9/20 + 10/90 = 101/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/20+10/90 9/20+20/90 9/40+10/90 27/20+10/90 9/20+30/90 9/60+10/90 45/20+10/90 9/20+50/90 63/20+10/90 9/20+70/90