Subtract 21/90 from 56/7
1st number: 8 0/7, 2nd number: 21/90
56/7 - 21/90 is 233/30.
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,
56/7 = 56 × 90/7 × 90 = 5040/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
21/90 = 21 × 7/90 × 7 = 147/630 - Subtract the two like fractions:
5040/630 - 147/630 = 5040 - 147/630 = 4893/630 - After reducing the fraction, the answer is 233/30
- In mixed form: 723/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-42/90 56/14-21/90 56/7-63/90 56/21-21/90 56/35-21/90 56/49-21/90