Subtract 18/40 from 18/14
1st number: 1 4/14, 2nd number: 18/40
18/14 - 18/40 is 117/140.
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,
18/14 = 18 × 20/14 × 20 = 360/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Subtract the two like fractions:
360/280 - 126/280 = 360 - 126/280 = 234/280 - After reducing the fraction, the answer is 117/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/14-18/40 18/14-36/40 18/28-18/40 18/14-18/80 54/14-18/40 18/14-54/40 18/42-18/40 90/14-18/40 18/14-90/40 18/70-18/40 18/98-18/40