Subtract 28/72 from 9/5
1st number: 1 4/5, 2nd number: 28/72
9/5 - 28/72 is 127/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
9/5 = 9 × 72/5 × 72 = 648/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
28/72 = 28 × 5/72 × 5 = 140/360 - Subtract the two like fractions:
648/360 - 140/360 = 648 - 140/360 = 508/360 - After reducing the fraction, the answer is 127/90
- In mixed form: 137/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/5-28/72 9/5-56/72 9/10-28/72 27/5-28/72 9/5-84/72 9/15-28/72 45/5-28/72 9/25-28/72 63/5-28/72 9/35-28/72