Subtract 3/18 from 28/7
1st number: 4 0/7, 2nd number: 3/18
28/7 - 3/18 is 23/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
28/7 = 28 × 18/7 × 18 = 504/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
3/18 = 3 × 7/18 × 7 = 21/126 - Subtract the two like fractions:
504/126 - 21/126 = 504 - 21/126 = 483/126 - After reducing the fraction, the answer is 23/6
- In mixed form: 35/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-3/18 28/7-6/18 28/14-3/18 28/7-3/36 84/7-3/18 28/7-9/18 28/21-3/18 28/7-3/54 28/7-15/18 28/35-3/18 28/7-3/90 28/7-21/18 28/49-3/18