Subtract 1/18 from 3/40
3/40 - 1/18 is 7/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
3/40 = 3 × 9/40 × 9 = 27/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
1/18 = 1 × 20/18 × 20 = 20/360 - Subtract the two like fractions:
27/360 - 20/360 = 27 - 20/360 = 7/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/40-1/18 3/40-2/18 3/80-1/18 3/40-1/36 9/40-1/18 3/40-3/18 3/40-1/54 15/40-1/18 3/40-5/18 3/40-1/90 21/40-1/18 3/40-7/18