Subtract 16/7 from 7/72
1st number: 7/72, 2nd number: 2 2/7
7/72 - 16/7 is -1103/504.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
7/72 = 7 × 7/72 × 7 = 49/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
16/7 = 16 × 72/7 × 72 = 1152/504 - Subtract the two like fractions:
49/504 - 1152/504 = 49 - 1152/504 = -1103/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72-16/7 7/72-32/7 7/72-16/14 21/72-16/7 7/72-48/7 7/72-16/21 35/72-16/7 7/72-80/7 7/72-16/35 49/72-16/7 7/72-16/49