Subtract 18/40 from 1/36
1/36 - 18/40 is -19/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 36 × 10 = 360,
1/36 = 1 × 10/36 × 10 = 10/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
18/40 = 18 × 9/40 × 9 = 162/360 - Subtract the two like fractions:
10/360 - 162/360 = 10 - 162/360 = -152/360 - After reducing the fraction, the answer is -19/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/36-18/40 1/36-36/40 1/72-18/40 1/36-18/80 3/36-18/40 1/36-54/40 5/36-18/40 1/36-90/40 7/36-18/40