Subtract 27/21 from 35/5
1st number: 7 0/5, 2nd number: 1 6/21
35/5 - 27/21 is 40/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
35/5 = 35 × 21/5 × 21 = 735/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
27/21 = 27 × 5/21 × 5 = 135/105 - Subtract the two like fractions:
735/105 - 135/105 = 735 - 135/105 = 600/105 - After reducing the fraction, the answer is 40/7
- In mixed form: 55/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/5-27/21 35/5-54/21 35/10-27/21 35/5-27/42 35/5-81/21 35/15-27/21 35/5-27/63 35/25-27/21