Subtract 18/7 from 28/2
1st number: 14 0/2, 2nd number: 2 4/7
28/2 - 18/7 is 80/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 2 × 7 = 14,
28/2 = 28 × 7/2 × 7 = 196/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
18/7 = 18 × 2/7 × 2 = 36/14 - Subtract the two like fractions:
196/14 - 36/14 = 196 - 36/14 = 160/14 - After reducing the fraction, the answer is 80/7
- In mixed form: 113/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/2-18/7 28/2-36/7 28/4-18/7 28/2-18/14 84/2-18/7 28/2-54/7 28/6-18/7 28/2-18/21 28/2-90/7 28/10-18/7 28/2-18/35 28/14-18/7 28/2-18/49