Subtract 10/72 from 20/4
1st number: 5 0/4, 2nd number: 10/72
20/4 - 10/72 is 175/36.
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,
20/4 = 20 × 18/4 × 18 = 360/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
10/72 = 10 × 1/72 × 1 = 10/72 - Subtract the two like fractions:
360/72 - 10/72 = 360 - 10/72 = 350/72 - After reducing the fraction, the answer is 175/36
- In mixed form: 431/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/4-10/72 20/4-20/72 20/8-10/72 60/4-10/72 20/4-30/72 20/12-10/72 20/4-50/72 20/4-70/72 20/28-10/72