Subtract 40/45 from 75/4
1st number: 18 3/4, 2nd number: 40/45
75/4 - 40/45 is 643/36.
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,
75/4 = 75 × 45/4 × 45 = 3375/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
40/45 = 40 × 4/45 × 4 = 160/180 - Subtract the two like fractions:
3375/180 - 160/180 = 3375 - 160/180 = 3215/180 - After reducing the fraction, the answer is 643/36
- In mixed form: 1731/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/4-80/45 75/8-40/45 75/4-40/90 75/12-40/45 75/20-40/45 75/28-40/45