Subtract 5/7 from 80/18
1st number: 4 8/18, 2nd number: 5/7
80/18 - 5/7 is 235/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
80/18 = 80 × 7/18 × 7 = 560/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
5/7 = 5 × 18/7 × 18 = 90/126 - Subtract the two like fractions:
560/126 - 90/126 = 560 - 90/126 = 470/126 - After reducing the fraction, the answer is 235/63
- In mixed form: 346/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/18-10/7 80/36-5/7 80/18-5/14 80/18-15/7 80/54-5/7 80/18-5/21 80/18-25/7 80/90-5/7 80/18-5/35 80/18-35/7 80/18-5/49