Subtract 40/9 from 20/32
1st number: 20/32, 2nd number: 4 4/9
20/32 - 40/9 is -275/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 9 is 288
Next, find the equivalent fraction of both fractional numbers with denominator 288 - For the 1st fraction, since 32 × 9 = 288,
20/32 = 20 × 9/32 × 9 = 180/288 - Likewise, for the 2nd fraction, since 9 × 32 = 288,
40/9 = 40 × 32/9 × 32 = 1280/288 - Subtract the two like fractions:
180/288 - 1280/288 = 180 - 1280/288 = -1100/288 - After reducing the fraction, the answer is -275/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/32-40/9 20/32-80/9 20/64-40/9 20/32-40/18 60/32-40/9 20/96-40/9 20/32-40/27 20/32-40/45 20/32-40/63