Subtract 18/32 from 20/36
20/36 - 18/32 is -1/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 32 is 288
Next, find the equivalent fraction of both fractional numbers with denominator 288 - For the 1st fraction, since 36 × 8 = 288,
20/36 = 20 × 8/36 × 8 = 160/288 - Likewise, for the 2nd fraction, since 32 × 9 = 288,
18/32 = 18 × 9/32 × 9 = 162/288 - Subtract the two like fractions:
160/288 - 162/288 = 160 - 162/288 = -2/288 - After reducing the fraction, the answer is -1/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/36-18/32 20/36-36/32 20/72-18/32 20/36-18/64 60/36-18/32 20/36-54/32 20/36-18/96 20/36-90/32