Subtract 5/72 from 18/4
1st number: 4 2/4, 2nd number: 5/72
18/4 - 5/72 is 319/72.
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,
18/4 = 18 × 18/4 × 18 = 324/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
5/72 = 5 × 1/72 × 1 = 5/72 - Subtract the two like fractions:
324/72 - 5/72 = 324 - 5/72 = 319/72 - In mixed form: 431/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/4-5/72 18/4-10/72 18/8-5/72 54/4-5/72 18/4-15/72 18/12-5/72 90/4-5/72 18/4-25/72 18/20-5/72 18/4-35/72 18/28-5/72