Subtract 3/40 from 75/18
1st number: 4 3/18, 2nd number: 3/40
75/18 - 3/40 is 491/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
75/18 = 75 × 20/18 × 20 = 1500/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
3/40 = 3 × 9/40 × 9 = 27/360 - Subtract the two like fractions:
1500/360 - 27/360 = 1500 - 27/360 = 1473/360 - After reducing the fraction, the answer is 491/120
- In mixed form: 411/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/18-6/40 75/36-3/40 75/18-3/80 75/18-9/40 75/54-3/40 75/18-15/40 75/90-3/40 75/18-21/40