Subtract 20/50 from 25/21
1st number: 1 4/21, 2nd number: 20/50
25/21 - 20/50 is 83/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 21 × 50 = 1050,
25/21 = 25 × 50/21 × 50 = 1250/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
20/50 = 20 × 21/50 × 21 = 420/1050 - Subtract the two like fractions:
1250/1050 - 420/1050 = 1250 - 420/1050 = 830/1050 - After reducing the fraction, the answer is 83/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21-20/50 25/21-40/50 25/42-20/50 75/21-20/50 25/21-60/50 25/63-20/50