Subtract 21/35 from 2/3
2/3 - 21/35 is 1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 3 × 35 = 105,
2/3 = 2 × 35/3 × 35 = 70/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
21/35 = 21 × 3/35 × 3 = 63/105 - Subtract the two like fractions:
70/105 - 63/105 = 70 - 63/105 = 7/105 - After reducing the fraction, the answer is 1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/3-21/35 2/3-42/35 2/6-21/35 2/3-21/70 6/3-21/35 2/3-63/35 2/9-21/35 10/3-21/35 2/15-21/35 14/3-21/35 2/21-21/35