Subtract 18/5 from 72/6
1st number: 12 0/6, 2nd number: 3 3/5
72/6 - 18/5 is 42/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 5 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 6 × 5 = 30,
72/6 = 72 × 5/6 × 5 = 360/30 - Likewise, for the 2nd fraction, since 5 × 6 = 30,
18/5 = 18 × 6/5 × 6 = 108/30 - Subtract the two like fractions:
360/30 - 108/30 = 360 - 108/30 = 252/30 - After reducing the fraction, the answer is 42/5
- In mixed form: 82/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/6-36/5 72/12-18/5 72/6-18/10 72/6-54/5 72/18-18/5 72/6-18/15 72/6-90/5 72/30-18/5 72/6-18/25 72/42-18/5 72/6-18/35