Subtract 75/70 from 50/20
1st number: 2 10/20, 2nd number: 1 5/70
50/20 - 75/70 is 10/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
50/20 = 50 × 7/20 × 7 = 350/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
75/70 = 75 × 2/70 × 2 = 150/140 - Subtract the two like fractions:
350/140 - 150/140 = 350 - 150/140 = 200/140 - After reducing the fraction, the answer is 10/7
- In mixed form: 13/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40-75/70 50/60-75/70