Subtract 4/10 from 72/9
1st number: 8 0/9, 2nd number: 4/10
72/9 - 4/10 is 38/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
72/9 = 72 × 10/9 × 10 = 720/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
4/10 = 4 × 9/10 × 9 = 36/90 - Subtract the two like fractions:
720/90 - 36/90 = 720 - 36/90 = 684/90 - After reducing the fraction, the answer is 38/5
- In mixed form: 73/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/9-8/10 72/18-4/10 72/9-4/20 72/9-12/10 72/27-4/10 72/9-4/30 72/9-20/10 72/45-4/10 72/9-4/50 72/9-28/10 72/63-4/10 72/9-4/70