Subtract 20/40 from 50/7
1st number: 7 1/7, 2nd number: 20/40
50/7 - 20/40 is 93/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
50/7 = 50 × 40/7 × 40 = 2000/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
20/40 = 20 × 7/40 × 7 = 140/280 - Subtract the two like fractions:
2000/280 - 140/280 = 2000 - 140/280 = 1860/280 - After reducing the fraction, the answer is 93/14
- In mixed form: 69/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/14-20/40 50/7-20/80 50/7-60/40 50/21-20/40 50/35-20/40 50/49-20/40