Subtract 45/8 from 72/7
1st number: 10 2/7, 2nd number: 5 5/8
72/7 - 45/8 is 261/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
72/7 = 72 × 8/7 × 8 = 576/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
45/8 = 45 × 7/8 × 7 = 315/56 - Subtract the two like fractions:
576/56 - 315/56 = 576 - 315/56 = 261/56 - In mixed form: 437/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/7-90/8 72/14-45/8 72/7-45/16 72/21-45/8 72/7-45/24 72/35-45/8 72/7-45/40 72/49-45/8 72/7-45/56