Subtract 28/72 from 40/36
1st number: 1 4/36, 2nd number: 28/72
40/36 - 28/72 is 13/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 36 × 2 = 72,
40/36 = 40 × 2/36 × 2 = 80/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
28/72 = 28 × 1/72 × 1 = 28/72 - Subtract the two like fractions:
80/72 - 28/72 = 80 - 28/72 = 52/72 - After reducing the fraction, the answer is 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/36-28/72 40/36-56/72 40/72-28/72 40/36-84/72