Subtract 1/5 from 75/21
1st number: 3 12/21, 2nd number: 1/5
75/21 - 1/5 is 118/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
75/21 = 75 × 5/21 × 5 = 375/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
1/5 = 1 × 21/5 × 21 = 21/105 - Subtract the two like fractions:
375/105 - 21/105 = 375 - 21/105 = 354/105 - After reducing the fraction, the answer is 118/35
- In mixed form: 313/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/21-2/5 75/42-1/5 75/21-1/10 75/21-3/5 75/63-1/5 75/21-1/15 75/21-1/25 75/21-7/5 75/21-1/35