Subtract 18/72 from 25/7
1st number: 3 4/7, 2nd number: 18/72
25/7 - 18/72 is 93/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
25/7 = 25 × 72/7 × 72 = 1800/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504 - Subtract the two like fractions:
1800/504 - 126/504 = 1800 - 126/504 = 1674/504 - After reducing the fraction, the answer is 93/28
- In mixed form: 39/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/7-18/72 25/7-36/72 25/14-18/72 75/7-18/72 25/7-54/72 25/21-18/72 25/7-90/72 25/35-18/72 25/49-18/72