Subtract 45/7 from 10/72
1st number: 10/72, 2nd number: 6 3/7
10/72 - 45/7 is -1585/252.
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,
45/7 = 45 × 72/7 × 72 = 3240/504 - Subtract the two like fractions:
70/504 - 3240/504 = 70 - 3240/504 = -3170/504 - After reducing the fraction, the answer is -1585/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/72-45/7 10/72-90/7 10/72-45/14 30/72-45/7 10/72-45/21 50/72-45/7 10/72-45/35 70/72-45/7 10/72-45/49