Subtract 21/35 from 3/6
3/6 - 21/35 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 6 × 35 = 210,
3/6 = 3 × 35/6 × 35 = 105/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
21/35 = 21 × 6/35 × 6 = 126/210 - Subtract the two like fractions:
105/210 - 126/210 = 105 - 126/210 = -21/210 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 3/6-42/35 3/12-21/35 3/6-21/70 9/6-21/35 3/6-63/35 3/18-21/35 15/6-21/35 3/30-21/35 21/6-21/35 3/42-21/35