Subtract 72/9 from 7/72
1st number: 7/72, 2nd number: 8 0/9
7/72 - 72/9 is -569/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
7/72 = 7 × 1/72 × 1 = 7/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
72/9 = 72 × 8/9 × 8 = 576/72 - Subtract the two like fractions:
7/72 - 576/72 = 7 - 576/72 = -569/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72-72/9 7/72-72/18 21/72-72/9 7/72-72/27 35/72-72/9 7/72-72/45 49/72-72/9 7/72-72/63