Subtract 84/20 from 40/14
1st number: 2 12/14, 2nd number: 4 4/20
40/14 - 84/20 is -47/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
40/14 = 40 × 10/14 × 10 = 400/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
84/20 = 84 × 7/20 × 7 = 588/140 - Subtract the two like fractions:
400/140 - 588/140 = 400 - 588/140 = -188/140 - After reducing the fraction, the answer is -47/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/14-84/20 40/28-84/20 40/14-84/40 40/42-84/20 40/14-84/60 40/70-84/20 40/98-84/20