Subtract 18/7 from 20/2
1st number: 10 0/2, 2nd number: 2 4/7
20/2 - 18/7 is 52/7.
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,
20/2 = 20 × 7/2 × 7 = 140/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
18/7 = 18 × 2/7 × 2 = 36/14 - Subtract the two like fractions:
140/14 - 36/14 = 140 - 36/14 = 104/14 - After reducing the fraction, the answer is 52/7
- In mixed form: 73/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/2-18/7 20/2-36/7 20/4-18/7 20/2-18/14 60/2-18/7 20/2-54/7 20/6-18/7 20/2-18/21 20/2-90/7 20/10-18/7 20/2-18/35 20/14-18/7 20/2-18/49