Subtract 12/40 from 72/24
1st number: 3 0/24, 2nd number: 12/40
72/24 - 12/40 is 27/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
72/24 = 72 × 5/24 × 5 = 360/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
12/40 = 12 × 3/40 × 3 = 36/120 - Subtract the two like fractions:
360/120 - 36/120 = 360 - 36/120 = 324/120 - After reducing the fraction, the answer is 27/10
- In mixed form: 27/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/24-24/40 72/48-12/40 72/24-12/80 72/24-36/40 72/24-60/40 72/24-84/40