Subtract 40/42 from 4/2
1st number: 2 0/2, 2nd number: 40/42
4/2 - 40/42 is 22/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
4/2 = 4 × 21/2 × 21 = 84/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
40/42 = 40 × 1/42 × 1 = 40/42 - Subtract the two like fractions:
84/42 - 40/42 = 84 - 40/42 = 44/42 - After reducing the fraction, the answer is 22/21
- In mixed form: 11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/2-40/42 4/2-80/42 4/2-40/84 12/2-40/42 4/6-40/42 20/2-40/42 4/10-40/42 28/2-40/42 4/14-40/42