Subtract 10/20 from 70/7
1st number: 10 0/7, 2nd number: 10/20
70/7 - 10/20 is 19/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
70/7 = 70 × 20/7 × 20 = 1400/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
10/20 = 10 × 7/20 × 7 = 70/140 - Subtract the two like fractions:
1400/140 - 70/140 = 1400 - 70/140 = 1330/140 - After reducing the fraction, the answer is 19/2
- In mixed form: 91/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/14-10/20 70/7-10/40 70/7-30/20 70/21-10/20 70/7-10/60 70/7-50/20 70/35-10/20 70/7-70/20 70/49-10/20