Subtract 21/25 from 72/4
1st number: 18 0/4, 2nd number: 21/25
72/4 - 21/25 is 429/25.
Steps for subtracting 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,
72/4 = 72 × 25/4 × 25 = 1800/100 - Likewise, for the 2nd fraction, since 25 × 4 = 100,
21/25 = 21 × 4/25 × 4 = 84/100 - Subtract the two like fractions:
1800/100 - 84/100 = 1800 - 84/100 = 1716/100 - After reducing the fraction, the answer is 429/25
- In mixed form: 174/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/4-42/25 72/8-21/25 72/4-21/50 72/4-63/25 72/12-21/25 72/4-21/75 72/20-21/25 72/28-21/25