Subtract 25/70 from 90/7
1st number: 12 6/7, 2nd number: 25/70
90/7 - 25/70 is 25/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
90/7 = 90 × 10/7 × 10 = 900/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
25/70 = 25 × 1/70 × 1 = 25/70 - Subtract the two like fractions:
900/70 - 25/70 = 900 - 25/70 = 875/70 - After reducing the fraction, the answer is 25/2
- In mixed form: 121/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/7-50/70 90/14-25/70 90/7-75/70 90/21-25/70 90/35-25/70 90/49-25/70