Subtract 8/10 from 72/4
1st number: 18 0/4, 2nd number: 8/10
72/4 - 8/10 is 86/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
72/4 = 72 × 5/4 × 5 = 360/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
8/10 = 8 × 2/10 × 2 = 16/20 - Subtract the two like fractions:
360/20 - 16/20 = 360 - 16/20 = 344/20 - After reducing the fraction, the answer is 86/5
- In mixed form: 171/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/4-16/10 72/8-8/10 72/4-8/20 72/4-24/10 72/12-8/10 72/4-8/30 72/4-40/10 72/20-8/10 72/4-8/50 72/4-56/10 72/28-8/10 72/4-8/70