Subtract 9/42 from 40/2
1st number: 20 0/2, 2nd number: 9/42
40/2 - 9/42 is 277/14.
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,
40/2 = 40 × 21/2 × 21 = 840/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
9/42 = 9 × 1/42 × 1 = 9/42 - Subtract the two like fractions:
840/42 - 9/42 = 840 - 9/42 = 831/42 - After reducing the fraction, the answer is 277/14
- In mixed form: 1911/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/2-9/42 40/2-18/42 40/4-9/42 40/2-9/84 40/2-27/42 40/6-9/42 40/2-45/42 40/10-9/42 40/2-63/42 40/14-9/42