Subtract 18/9 from 2/40
1st number: 2/40, 2nd number: 2 0/9
2/40 - 18/9 is -39/20.
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,
2/40 = 2 × 9/40 × 9 = 18/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
18/9 = 18 × 40/9 × 40 = 720/360 - Subtract the two like fractions:
18/360 - 720/360 = 18 - 720/360 = -702/360 - After reducing the fraction, the answer is -39/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/40-18/9 2/40-36/9 2/80-18/9 6/40-18/9 2/40-54/9 2/40-18/27 10/40-18/9 2/40-90/9 2/40-18/45 14/40-18/9 2/40-18/63