Subtract 50/40 from 21/14
1st number: 1 7/14, 2nd number: 1 10/40
21/14 - 50/40 is 1/4.
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,
21/14 = 21 × 20/14 × 20 = 420/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
50/40 = 50 × 7/40 × 7 = 350/280 - Subtract the two like fractions:
420/280 - 350/280 = 420 - 350/280 = 70/280 - After reducing the fraction, the answer is 1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/14-50/40 21/28-50/40 21/14-50/80 63/14-50/40 21/42-50/40 21/70-50/40 21/98-50/40