Subtract 3/36 from 40/28
1st number: 1 12/28, 2nd number: 3/36
40/28 - 3/36 is 113/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
40/28 = 40 × 9/28 × 9 = 360/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
3/36 = 3 × 7/36 × 7 = 21/252 - Subtract the two like fractions:
360/252 - 21/252 = 360 - 21/252 = 339/252 - After reducing the fraction, the answer is 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: 80/28-3/36 40/28-6/36 40/56-3/36 40/28-3/72 40/28-9/36 40/84-3/36 40/28-15/36 40/28-21/36