Subtract 72/50 from 21/4
1st number: 5 1/4, 2nd number: 1 22/50
21/4 - 72/50 is 381/100.
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,
21/4 = 21 × 25/4 × 25 = 525/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
72/50 = 72 × 2/50 × 2 = 144/100 - Subtract the two like fractions:
525/100 - 144/100 = 525 - 144/100 = 381/100 - In mixed form: 381/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4-72/50 21/8-72/50 63/4-72/50 21/12-72/50 21/20-72/50 21/28-72/50