Subtract 18/40 from 72/60
1st number: 1 12/60, 2nd number: 18/40
72/60 - 18/40 is 3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
72/60 = 72 × 2/60 × 2 = 144/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
18/40 = 18 × 3/40 × 3 = 54/120 - Subtract the two like fractions:
144/120 - 54/120 = 144 - 54/120 = 90/120 - After reducing the fraction, the answer is 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/60-36/40 72/60-18/80 72/60-54/40 72/60-90/40