Subtract 6/21 from 2/70
2/70 - 6/21 is -9/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
2/70 = 2 × 3/70 × 3 = 6/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
6/21 = 6 × 10/21 × 10 = 60/210 - Subtract the two like fractions:
6/210 - 60/210 = 6 - 60/210 = -54/210 - After reducing the fraction, the answer is -9/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/70-6/21 2/70-12/21 2/70-6/42 6/70-6/21 2/70-18/21 2/70-6/63 10/70-6/21 2/70-30/21 14/70-6/21 2/70-42/21