Subtract 7/9 from 40/2
1st number: 20 0/2, 2nd number: 7/9
40/2 - 7/9 is 173/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 9 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 2 × 9 = 18,
40/2 = 40 × 9/2 × 9 = 360/18 - Likewise, for the 2nd fraction, since 9 × 2 = 18,
7/9 = 7 × 2/9 × 2 = 14/18 - Subtract the two like fractions:
360/18 - 14/18 = 360 - 14/18 = 346/18 - After reducing the fraction, the answer is 173/9
- In mixed form: 192/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/2-7/9 40/2-14/9 40/4-7/9 40/2-7/18 40/2-21/9 40/6-7/9 40/2-7/27 40/2-35/9 40/10-7/9 40/2-7/45 40/2-49/9 40/14-7/9 40/2-7/63