Subtract 2/7 from 90/10
1st number: 9 0/10, 2nd number: 2/7
90/10 - 2/7 is 61/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
90/10 = 90 × 7/10 × 7 = 630/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
2/7 = 2 × 10/7 × 10 = 20/70 - Subtract the two like fractions:
630/70 - 20/70 = 630 - 20/70 = 610/70 - After reducing the fraction, the answer is 61/7
- In mixed form: 85/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-4/7 90/20-2/7 90/10-2/14 90/10-6/7 90/30-2/7 90/10-2/21 90/10-10/7 90/50-2/7 90/10-2/35 90/10-14/7 90/70-2/7 90/10-2/49