Subtract 9/10 from 72/8
1st number: 9 0/8, 2nd number: 9/10
72/8 - 9/10 is 81/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 8 × 5 = 40,
72/8 = 72 × 5/8 × 5 = 360/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
9/10 = 9 × 4/10 × 4 = 36/40 - Subtract the two like fractions:
360/40 - 36/40 = 360 - 36/40 = 324/40 - After reducing the fraction, the answer is 81/10
- In mixed form: 81/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/8-18/10 72/16-9/10 72/8-9/20 72/8-27/10 72/24-9/10 72/8-9/30 72/8-45/10 72/40-9/10 72/8-9/50 72/8-63/10 72/56-9/10 72/8-9/70