Add 5/40 and 15/20
5/40 + 15/20 is 7/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
5/40 = 5 × 1/40 × 1 = 5/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
15/20 = 15 × 2/20 × 2 = 30/40 - Add the two like fractions:
5/40 + 30/40 = 5 + 30/40 = 35/40 - 35/40 simplified gives 7/8
- So, 5/40 + 15/20 = 7/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40+15/20 5/40+30/20 5/80+15/20 5/40+15/40 15/40+15/20 5/40+45/20 5/40+15/60 25/40+15/20 5/40+75/20 35/40+15/20