Subtract 20/90 from 35/7
1st number: 5 0/7, 2nd number: 20/90
35/7 - 20/90 is 43/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
35/7 = 35 × 90/7 × 90 = 3150/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Subtract the two like fractions:
3150/630 - 140/630 = 3150 - 140/630 = 3010/630 - After reducing the fraction, the answer is 43/9
- In mixed form: 47/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/7-20/90 35/7-40/90 35/14-20/90 35/7-60/90 35/21-20/90 35/49-20/90