Subtract 8/6 from 20/70
1st number: 20/70, 2nd number: 1 2/6
20/70 - 8/6 is -22/21.
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,
8/6 = 8 × 35/6 × 35 = 280/210 - Subtract the two like fractions:
60/210 - 280/210 = 60 - 280/210 = -220/210 - After reducing the fraction, the answer is -22/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70-8/6 20/70-16/6 20/70-8/12 60/70-8/6 20/70-24/6 20/70-8/18 20/70-40/6 20/70-8/30 20/70-56/6 20/70-8/42