Add 20/50 and 21/75
20/50 + 21/75 is 17/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 75 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 50 × 3 = 150,
20/50 = 20 × 3/50 × 3 = 60/150 - Likewise, for the 2nd fraction, since 75 × 2 = 150,
21/75 = 21 × 2/75 × 2 = 42/150 - Add the two like fractions:
60/150 + 42/150 = 60 + 42/150 = 102/150 - 102/150 simplified gives 17/25
- So, 20/50 + 21/75 = 17/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/50+21/75 20/50+42/75 60/50+21/75 20/50+63/75