Subtract 72/8 from 20/25
1st number: 20/25, 2nd number: 9 0/8
20/25 - 72/8 is -41/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 8 is 200
Next, find the equivalent fraction of both fractional numbers with denominator 200 - For the 1st fraction, since 25 × 8 = 200,
20/25 = 20 × 8/25 × 8 = 160/200 - Likewise, for the 2nd fraction, since 8 × 25 = 200,
72/8 = 72 × 25/8 × 25 = 1800/200 - Subtract the two like fractions:
160/200 - 1800/200 = 160 - 1800/200 = -1640/200 - After reducing the fraction, the answer is -41/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/25-72/8 20/50-72/8 20/25-72/16 60/25-72/8 20/75-72/8 20/25-72/24 20/25-72/40 20/25-72/56