Subtract 20/42 from 84/5
1st number: 16 4/5, 2nd number: 20/42
84/5 - 20/42 is 1714/105.
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,
84/5 = 84 × 42/5 × 42 = 3528/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
20/42 = 20 × 5/42 × 5 = 100/210 - Subtract the two like fractions:
3528/210 - 100/210 = 3528 - 100/210 = 3428/210 - After reducing the fraction, the answer is 1714/105
- In mixed form: 1634/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-40/42 84/10-20/42 84/5-20/84 84/5-60/42 84/15-20/42 84/25-20/42 84/35-20/42