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