Subtract 21/72 from 42/25
1st number: 1 17/25, 2nd number: 21/72
42/25 - 21/72 is 833/600.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 25 × 72 = 1800,
42/25 = 42 × 72/25 × 72 = 3024/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
21/72 = 21 × 25/72 × 25 = 525/1800 - Subtract the two like fractions:
3024/1800 - 525/1800 = 3024 - 525/1800 = 2499/1800 - After reducing the fraction, the answer is 833/600
- In mixed form: 1233/600
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/25-21/72 42/25-42/72 42/50-21/72 42/25-63/72 42/75-21/72