Add 5/20 and 7/45
5/20 + 7/45 is 73/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
5/20 = 5 × 9/20 × 9 = 45/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
7/45 = 7 × 4/45 × 4 = 28/180 - Add the two like fractions:
45/180 + 28/180 = 45 + 28/180 = 73/180 - So, 5/20 + 7/45 = 73/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20+7/45 5/20+14/45 5/40+7/45 5/20+7/90 15/20+7/45 5/20+21/45 5/60+7/45 25/20+7/45 5/20+35/45 35/20+7/45 5/20+49/45