Subtract 80/21 from 1/50
1st number: 1/50, 2nd number: 3 17/21
1/50 - 80/21 is -3979/1050.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 21 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 50 × 21 = 1050,
1/50 = 1 × 21/50 × 21 = 21/1050 - Likewise, for the 2nd fraction, since 21 × 50 = 1050,
80/21 = 80 × 50/21 × 50 = 4000/1050 - Subtract the two like fractions:
21/1050 - 4000/1050 = 21 - 4000/1050 = -3979/1050
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/50-80/21 1/50-80/42 3/50-80/21 1/50-80/63 5/50-80/21 7/50-80/21