Subtract 9/72 from 56/90
56/90 - 9/72 is 179/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
56/90 = 56 × 4/90 × 4 = 224/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Subtract the two like fractions:
224/360 - 45/360 = 224 - 45/360 = 179/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/90-18/72 56/90-27/72 56/90-45/72 56/90-63/72