Add 5/20 and 7/40
5/20 + 7/40 is 17/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
5/20 = 5 × 2/20 × 2 = 10/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
7/40 = 7 × 1/40 × 1 = 7/40 - Add the two like fractions:
10/40 + 7/40 = 10 + 7/40 = 17/40 - So, 5/20 + 7/40 = 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20+7/40 5/20+14/40 5/40+7/40 5/20+7/80 15/20+7/40 5/20+21/40 5/60+7/40 25/20+7/40 5/20+35/40 35/20+7/40 5/20+49/40