Subtract 20/45 from 70/7
1st number: 10 0/7, 2nd number: 20/45
70/7 - 20/45 is 86/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
70/7 = 70 × 45/7 × 45 = 3150/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
20/45 = 20 × 7/45 × 7 = 140/315 - Subtract the two like fractions:
3150/315 - 140/315 = 3150 - 140/315 = 3010/315 - After reducing the fraction, the answer is 86/9
- In mixed form: 95/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/7-40/45 70/14-20/45 70/7-20/90 70/7-60/45 70/21-20/45 70/35-20/45 70/49-20/45