Subtract 6/4 from 20/70
1st number: 20/70, 2nd number: 1 2/4
20/70 - 6/4 is -17/14.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
20/70 = 20 × 2/70 × 2 = 40/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
6/4 = 6 × 35/4 × 35 = 210/140 - Subtract the two like fractions:
40/140 - 210/140 = 40 - 210/140 = -170/140 - After reducing the fraction, the answer is -17/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/70-6/4 20/70-12/4 20/70-6/8 60/70-6/4 20/70-18/4 20/70-6/12 20/70-30/4 20/70-6/20 20/70-42/4 20/70-6/28