Add 20/50 and 21/16
1st number: 20/50, 2nd number: 1 5/16
20/50 + 21/16 is 137/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 16 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 16 × 25 = 400,
21/16 = 21 × 25/16 × 25 = 525/400 - Add the two like fractions:
160/400 + 525/400 = 160 + 525/400 = 685/400 - 685/400 simplified gives 137/80
- So, 20/50 + 21/16 = 137/80
In mixed form: 157/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/50+21/16 20/50+42/16 20/50+21/32 60/50+21/16 20/50+63/16 20/50+21/48 20/50+21/80