Subtract 5/7 from 10/72
10/72 - 5/7 is -145/252.
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,
10/72 = 10 × 7/72 × 7 = 70/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
5/7 = 5 × 72/7 × 72 = 360/504 - Subtract the two like fractions:
70/504 - 360/504 = 70 - 360/504 = -290/504 - After reducing the fraction, the answer is -145/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/72-5/7 10/72-10/7 10/72-5/14 30/72-5/7 10/72-15/7 10/72-5/21 50/72-5/7 10/72-25/7 10/72-5/35 70/72-5/7 10/72-35/7 10/72-5/49