Subtract 20/9 from 10/40
1st number: 10/40, 2nd number: 2 2/9
10/40 - 20/9 is -71/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 9 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
10/40 = 10 × 9/40 × 9 = 90/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
20/9 = 20 × 40/9 × 40 = 800/360 - Subtract the two like fractions:
90/360 - 800/360 = 90 - 800/360 = -710/360 - After reducing the fraction, the answer is -71/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40-20/9 10/40-40/9 10/80-20/9 10/40-20/18 30/40-20/9 10/40-60/9 10/40-20/27 50/40-20/9 10/40-20/45 70/40-20/9 10/40-20/63