Subtract 60/70 from 80/20
1st number: 4 0/20, 2nd number: 60/70
80/20 - 60/70 is 22/7.
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,
80/20 = 80 × 7/20 × 7 = 560/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
60/70 = 60 × 2/70 × 2 = 120/140 - Subtract the two like fractions:
560/140 - 120/140 = 560 - 120/140 = 440/140 - After reducing the fraction, the answer is 22/7
- In mixed form: 31/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/40-60/70 80/60-60/70