Add 4/20 and 7/9
4/20 + 7/9 is 44/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 9 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
4/20 = 4 × 9/20 × 9 = 36/180 - Likewise, for the 2nd fraction, since 9 × 20 = 180,
7/9 = 7 × 20/9 × 20 = 140/180 - Add the two like fractions:
36/180 + 140/180 = 36 + 140/180 = 176/180 - 176/180 simplified gives 44/45
- So, 4/20 + 7/9 = 44/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/20+7/9 4/20+14/9 4/40+7/9 4/20+7/18 12/20+7/9 4/20+21/9 4/60+7/9 4/20+7/27 4/20+35/9 4/20+7/45 28/20+7/9 4/20+49/9 4/20+7/63