Subtract 8/42 from 1/5
1/5 - 8/42 is 1/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 5 × 42 = 210,
1/5 = 1 × 42/5 × 42 = 42/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
8/42 = 8 × 5/42 × 5 = 40/210 - Subtract the two like fractions:
42/210 - 40/210 = 42 - 40/210 = 2/210 - After reducing the fraction, the answer is 1/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5-8/42 1/5-16/42 1/10-8/42 1/5-8/84 3/5-8/42 1/5-24/42 1/15-8/42 1/5-40/42 1/25-8/42 7/5-8/42 1/5-56/42 1/35-8/42