Subtract 1/12 from 40/28
1st number: 1 12/28, 2nd number: 1/12
40/28 - 1/12 is 113/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
40/28 = 40 × 3/28 × 3 = 120/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
1/12 = 1 × 7/12 × 7 = 7/84 - Subtract the two like fractions:
120/84 - 7/84 = 120 - 7/84 = 113/84 - In mixed form: 129/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28-1/12 40/28-2/12 40/56-1/12 40/28-1/24 40/28-3/12 40/84-1/12 40/28-1/36 40/28-5/12 40/28-1/60 40/28-7/12 40/28-1/84