Add 20/50 and 7/80
20/50 + 7/80 is 39/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 50 × 8 = 400,
20/50 = 20 × 8/50 × 8 = 160/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
7/80 = 7 × 5/80 × 5 = 35/400 - Add the two like fractions:
160/400 + 35/400 = 160 + 35/400 = 195/400 - 195/400 simplified gives 39/80
- So, 20/50 + 7/80 = 39/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/50+7/80 20/50+14/80 60/50+7/80 20/50+21/80 20/50+35/80 20/50+49/80