Subtract 90/12 from 72/5
1st number: 14 2/5, 2nd number: 7 6/12
72/5 - 90/12 is 69/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
72/5 = 72 × 12/5 × 12 = 864/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
90/12 = 90 × 5/12 × 5 = 450/60 - Subtract the two like fractions:
864/60 - 450/60 = 864 - 450/60 = 414/60 - After reducing the fraction, the answer is 69/10
- In mixed form: 69/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10-90/12 72/5-90/24 72/15-90/12 72/5-90/36 72/25-90/12 72/5-90/60 72/35-90/12 72/5-90/84