Subtract 1/5 from 90/12
1st number: 7 6/12, 2nd number: 1/5
90/12 - 1/5 is 73/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
90/12 = 90 × 5/12 × 5 = 450/60 - Likewise, for the 2nd fraction, since 5 × 12 = 60,
1/5 = 1 × 12/5 × 12 = 12/60 - Subtract the two like fractions:
450/60 - 12/60 = 450 - 12/60 = 438/60 - After reducing the fraction, the answer is 73/10
- In mixed form: 73/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-2/5 90/24-1/5 90/12-1/10 90/12-3/5 90/36-1/5 90/12-1/15 90/60-1/5 90/12-1/25 90/12-7/5 90/84-1/5 90/12-1/35