Subtract 72/8 from 10/5
1st number: 2 0/5, 2nd number: 9 0/8
10/5 - 72/8 is -7/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
10/5 = 10 × 8/5 × 8 = 80/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
72/8 = 72 × 5/8 × 5 = 360/40 - Subtract the two like fractions:
80/40 - 360/40 = 80 - 360/40 = -280/40 - After reducing the fraction, the answer is -7/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/5-72/8 10/5-72/16 30/5-72/8 10/15-72/8 10/5-72/24 50/5-72/8 10/25-72/8 10/5-72/40 70/5-72/8 10/35-72/8 10/5-72/56