Subtract 40/45 from 8/4
1st number: 2 0/4, 2nd number: 40/45
8/4 - 40/45 is 10/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
8/4 = 8 × 45/4 × 45 = 360/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
40/45 = 40 × 4/45 × 4 = 160/180 - Subtract the two like fractions:
360/180 - 160/180 = 360 - 160/180 = 200/180 - After reducing the fraction, the answer is 10/9
- In mixed form: 11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/4-40/45 8/4-80/45 8/4-40/90 24/4-40/45 8/12-40/45 40/4-40/45 8/20-40/45 56/4-40/45 8/28-40/45