Subtract 21/50 from 7/4
1st number: 1 3/4, 2nd number: 21/50
7/4 - 21/50 is 133/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 4 × 25 = 100,
7/4 = 7 × 25/4 × 25 = 175/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
21/50 = 21 × 2/50 × 2 = 42/100 - Subtract the two like fractions:
175/100 - 42/100 = 175 - 42/100 = 133/100 - In mixed form: 133/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4-21/50 7/4-42/50 7/8-21/50 21/4-21/50 7/4-63/50 7/12-21/50 35/4-21/50 7/20-21/50 49/4-21/50 7/28-21/50