Subtract 12/40 from 3/14
3/14 - 12/40 is -3/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 14 × 20 = 280,
3/14 = 3 × 20/14 × 20 = 60/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
12/40 = 12 × 7/40 × 7 = 84/280 - Subtract the two like fractions:
60/280 - 84/280 = 60 - 84/280 = -24/280 - After reducing the fraction, the answer is -3/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/14-12/40 3/14-24/40 3/28-12/40 3/14-12/80 9/14-12/40 3/14-36/40 3/42-12/40 15/14-12/40 3/14-60/40 3/70-12/40 21/14-12/40 3/14-84/40 3/98-12/40