Subtract 2/6 from 20/70
20/70 - 2/6 is -1/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 6 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
20/70 = 20 × 3/70 × 3 = 60/210 - Likewise, for the 2nd fraction, since 6 × 35 = 210,
2/6 = 2 × 35/6 × 35 = 70/210 - Subtract the two like fractions:
60/210 - 70/210 = 60 - 70/210 = -10/210 - After reducing the fraction, the answer is -1/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70-2/6 20/70-4/6 20/70-2/12 60/70-2/6 20/70-2/18 20/70-10/6 20/70-2/30 20/70-14/6 20/70-2/42