Subtract 9/7 from 80/20
1st number: 4 0/20, 2nd number: 1 2/7
80/20 - 9/7 is 19/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
80/20 = 80 × 7/20 × 7 = 560/140 - Likewise, for the 2nd fraction, since 7 × 20 = 140,
9/7 = 9 × 20/7 × 20 = 180/140 - Subtract the two like fractions:
560/140 - 180/140 = 560 - 180/140 = 380/140 - After reducing the fraction, the answer is 19/7
- In mixed form: 25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20-18/7 80/40-9/7 80/20-9/14 80/20-27/7 80/60-9/7 80/20-9/21 80/20-45/7 80/20-9/35 80/20-63/7 80/20-9/49