Subtract 36/18 from 7/72
1st number: 7/72, 2nd number: 2 0/18
7/72 - 36/18 is -137/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 18 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 18 × 4 = 72,
36/18 = 36 × 4/18 × 4 = 144/72 - Subtract the two like fractions:
7/72 - 144/72 = 7 - 144/72 = -137/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72-36/18 7/72-72/18 21/72-36/18 7/72-36/54 35/72-36/18 7/72-36/90 49/72-36/18