Subtract 9/35 from 70/21
1st number: 3 7/21, 2nd number: 9/35
70/21 - 9/35 is 323/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
70/21 = 70 × 5/21 × 5 = 350/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
9/35 = 9 × 3/35 × 3 = 27/105 - Subtract the two like fractions:
350/105 - 27/105 = 350 - 27/105 = 323/105 - In mixed form: 38/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21-18/35 70/42-9/35 70/21-9/70 70/21-27/35 70/63-9/35 70/21-45/35 70/21-63/35