Subtract 40/7 from 75/28
1st number: 2 19/28, 2nd number: 5 5/7
75/28 - 40/7 is -85/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
75/28 = 75 × 1/28 × 1 = 75/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
40/7 = 40 × 4/7 × 4 = 160/28 - Subtract the two like fractions:
75/28 - 160/28 = 75 - 160/28 = -85/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/28-80/7 75/56-40/7 75/28-40/14 75/84-40/7 75/28-40/21 75/28-40/35 75/28-40/49