Subtract 1/72 from 7/8
7/8 - 1/72 is 31/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
7/8 = 7 × 9/8 × 9 = 63/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
1/72 = 1 × 1/72 × 1 = 1/72 - Subtract the two like fractions:
63/72 - 1/72 = 63 - 1/72 = 62/72 - After reducing the fraction, the answer is 31/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/8-1/72 7/8-2/72 7/16-1/72 21/8-1/72 7/8-3/72 7/24-1/72 35/8-1/72 7/8-5/72 7/40-1/72 49/8-1/72 7/8-7/72 7/56-1/72