Subtract 5/9 from 12/40
12/40 - 5/9 is -23/90.
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,
12/40 = 12 × 9/40 × 9 = 108/360 - Likewise, for the 2nd fraction, since 9 × 40 = 360,
5/9 = 5 × 40/9 × 40 = 200/360 - Subtract the two like fractions:
108/360 - 200/360 = 108 - 200/360 = -92/360 - After reducing the fraction, the answer is -23/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40-5/9 12/40-10/9 12/80-5/9 12/40-5/18 36/40-5/9 12/40-15/9 12/40-5/27 60/40-5/9 12/40-25/9 12/40-5/45 84/40-5/9 12/40-35/9 12/40-5/63