Subtract 3/90 from 70/7
1st number: 10 0/7, 2nd number: 3/90
70/7 - 3/90 is 299/30.
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,
70/7 = 70 × 90/7 × 90 = 6300/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
3/90 = 3 × 7/90 × 7 = 21/630 - Subtract the two like fractions:
6300/630 - 21/630 = 6300 - 21/630 = 6279/630 - After reducing the fraction, the answer is 299/30
- In mixed form: 929/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/7-6/90 70/14-3/90 70/7-9/90 70/21-3/90 70/7-15/90 70/35-3/90 70/7-21/90 70/49-3/90