Subtract 40/9 from 12/4
1st number: 3 0/4, 2nd number: 4 4/9
12/4 - 40/9 is -13/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
12/4 = 12 × 9/4 × 9 = 108/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
40/9 = 40 × 4/9 × 4 = 160/36 - Subtract the two like fractions:
108/36 - 160/36 = 108 - 160/36 = -52/36 - After reducing the fraction, the answer is -13/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/4-40/9 12/4-80/9 12/8-40/9 12/4-40/18 36/4-40/9 12/4-40/27 60/4-40/9 12/20-40/9 12/4-40/45 84/4-40/9 12/28-40/9 12/4-40/63