Subtract 8/42 from 20/2
1st number: 10 0/2, 2nd number: 8/42
20/2 - 8/42 is 206/21.
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,
20/2 = 20 × 21/2 × 21 = 420/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
8/42 = 8 × 1/42 × 1 = 8/42 - Subtract the two like fractions:
420/42 - 8/42 = 420 - 8/42 = 412/42 - After reducing the fraction, the answer is 206/21
- In mixed form: 917/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/2-8/42 20/2-16/42 20/4-8/42 20/2-8/84 60/2-8/42 20/2-24/42 20/6-8/42 20/2-40/42 20/10-8/42 20/2-56/42 20/14-8/42