Subtract 70/21 from 3/35
1st number: 3/35, 2nd number: 3 7/21
3/35 - 70/21 is -341/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
3/35 = 3 × 3/35 × 3 = 9/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
70/21 = 70 × 5/21 × 5 = 350/105 - Subtract the two like fractions:
9/105 - 350/105 = 9 - 350/105 = -341/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/35-70/21 3/70-70/21 3/35-70/42 9/35-70/21 3/35-70/63 15/35-70/21 21/35-70/21