Subtract 27/84 from 84/42
1st number: 2 0/42, 2nd number: 27/84
84/42 - 27/84 is 47/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
84/42 = 84 × 2/42 × 2 = 168/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
27/84 = 27 × 1/84 × 1 = 27/84 - Subtract the two like fractions:
168/84 - 27/84 = 168 - 27/84 = 141/84 - After reducing the fraction, the answer is 47/28
- In mixed form: 119/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/42-54/84 84/42-81/84