Subtract 5/7 from 90/12
1st number: 7 6/12, 2nd number: 5/7
90/12 - 5/7 is 95/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 7 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
90/12 = 90 × 7/12 × 7 = 630/84 - Likewise, for the 2nd fraction, since 7 × 12 = 84,
5/7 = 5 × 12/7 × 12 = 60/84 - Subtract the two like fractions:
630/84 - 60/84 = 630 - 60/84 = 570/84 - After reducing the fraction, the answer is 95/14
- In mixed form: 611/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/12-10/7 90/24-5/7 90/12-5/14 90/12-15/7 90/36-5/7 90/12-5/21 90/12-25/7 90/60-5/7 90/12-5/35 90/12-35/7 90/84-5/7 90/12-5/49