Subtract 56/40 from 7/72
1st number: 7/72, 2nd number: 1 16/40
7/72 - 56/40 is -469/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
7/72 = 7 × 5/72 × 5 = 35/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
56/40 = 56 × 9/40 × 9 = 504/360 - Subtract the two like fractions:
35/360 - 504/360 = 35 - 504/360 = -469/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72-56/40 7/72-56/80 21/72-56/40 35/72-56/40 49/72-56/40