Subtract 7/72 from 28/4
1st number: 7 0/4, 2nd number: 7/72
28/4 - 7/72 is 497/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
28/4 = 28 × 18/4 × 18 = 504/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
7/72 = 7 × 1/72 × 1 = 7/72 - Subtract the two like fractions:
504/72 - 7/72 = 504 - 7/72 = 497/72 - In mixed form: 665/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/4-7/72 28/4-14/72 28/8-7/72 84/4-7/72 28/4-21/72 28/12-7/72 28/4-35/72 28/20-7/72 28/4-49/72