Subtract 28/42 from 40/4
1st number: 10 0/4, 2nd number: 28/42
40/4 - 28/42 is 28/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
40/4 = 40 × 21/4 × 21 = 840/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
28/42 = 28 × 2/42 × 2 = 56/84 - Subtract the two like fractions:
840/84 - 56/84 = 840 - 56/84 = 784/84 - After reducing the fraction, the answer is 28/3
- In mixed form: 91/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/4-28/42 40/4-56/42 40/8-28/42 40/4-28/84 40/4-84/42 40/12-28/42 40/20-28/42 40/28-28/42