Subtract 40/12 from 28/32
1st number: 28/32, 2nd number: 3 4/12
28/32 - 40/12 is -59/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 12 is 96
Next, find the equivalent fraction of both fractional numbers with denominator 96 - For the 1st fraction, since 32 × 3 = 96,
28/32 = 28 × 3/32 × 3 = 84/96 - Likewise, for the 2nd fraction, since 12 × 8 = 96,
40/12 = 40 × 8/12 × 8 = 320/96 - Subtract the two like fractions:
84/96 - 320/96 = 84 - 320/96 = -236/96 - After reducing the fraction, the answer is -59/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/32-40/12 28/32-80/12 28/64-40/12 28/32-40/24 84/32-40/12 28/96-40/12 28/32-40/36 28/32-40/60 28/32-40/84