Subtract 7/42 from 8/2
1st number: 4 0/2, 2nd number: 7/42
8/2 - 7/42 is 23/6.
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,
8/2 = 8 × 21/2 × 21 = 168/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
7/42 = 7 × 1/42 × 1 = 7/42 - Subtract the two like fractions:
168/42 - 7/42 = 168 - 7/42 = 161/42 - After reducing the fraction, the answer is 23/6
- In mixed form: 35/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/2-7/42 8/2-14/42 8/4-7/42 8/2-7/84 24/2-7/42 8/2-21/42 8/6-7/42 40/2-7/42 8/2-35/42 8/10-7/42 56/2-7/42 8/2-49/42 8/14-7/42