Add 20/4 and 21/25
1st number: 5 0/4, 2nd number: 21/25
20/4 + 21/25 is 146/25.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 25 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 4 × 25 = 100,
20/4 = 20 × 25/4 × 25 = 500/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
21/25 = 21 × 4/25 × 4 = 84/100 - Add the two like fractions:
500/100 + 84/100 = 500 + 84/100 = 584/100 - 584/100 simplified gives 146/25
- So, 20/4 + 21/25 = 146/25
In mixed form: 521/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4+21/25 20/4+42/25 20/8+21/25 20/4+21/50 60/4+21/25 20/4+63/25 20/12+21/25 20/4+21/75 20/28+21/25