Subtract 8/10 from 42/5
1st number: 8 2/5, 2nd number: 8/10
42/5 - 8/10 is 38/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 10 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 5 × 2 = 10,
42/5 = 42 × 2/5 × 2 = 84/10 - Likewise, for the 2nd fraction, since 10 × 1 = 10,
8/10 = 8 × 1/10 × 1 = 8/10 - Subtract the two like fractions:
84/10 - 8/10 = 84 - 8/10 = 76/10 - After reducing the fraction, the answer is 38/5
- In mixed form: 73/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-8/10 42/5-16/10 42/10-8/10 42/5-8/20 42/5-24/10 42/15-8/10 42/5-8/30 42/5-40/10 42/25-8/10 42/5-8/50 42/5-56/10 42/35-8/10 42/5-8/70