Subtract 90/60 from 72/4
1st number: 18 0/4, 2nd number: 1 30/60
72/4 - 90/60 is 33/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
72/4 = 72 × 15/4 × 15 = 1080/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
90/60 = 90 × 1/60 × 1 = 90/60 - Subtract the two like fractions:
1080/60 - 90/60 = 1080 - 90/60 = 990/60 - After reducing the fraction, the answer is 33/2
- In mixed form: 161/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/8-90/60 72/12-90/60 72/20-90/60 72/28-90/60