Subtract 5/72 from 4/45
4/45 - 5/72 is 7/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
4/45 = 4 × 8/45 × 8 = 32/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
5/72 = 5 × 5/72 × 5 = 25/360 - Subtract the two like fractions:
32/360 - 25/360 = 32 - 25/360 = 7/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45-5/72 4/45-10/72 4/90-5/72 12/45-5/72 4/45-15/72 20/45-5/72 4/45-25/72 28/45-5/72 4/45-35/72