Add 10/20 and 4/18
10/20 + 4/18 is 13/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
10/20 = 10 × 9/20 × 9 = 90/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
4/18 = 4 × 10/18 × 10 = 40/180 - Add the two like fractions:
90/180 + 40/180 = 90 + 40/180 = 130/180 - 130/180 simplified gives 13/18
- So, 10/20 + 4/18 = 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20+8/18 10/40+4/18 10/20+4/36 30/20+4/18 10/20+12/18 10/60+4/18 10/20+4/54 50/20+4/18 10/20+20/18 10/20+4/90 70/20+4/18 10/20+28/18