Subtract 10/40 from 42/14
1st number: 3 0/14, 2nd number: 10/40
42/14 - 10/40 is 11/4.
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,
42/14 = 42 × 20/14 × 20 = 840/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
10/40 = 10 × 7/40 × 7 = 70/280 - Subtract the two like fractions:
840/280 - 70/280 = 840 - 70/280 = 770/280 - After reducing the fraction, the answer is 11/4
- In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/14-10/40 42/14-20/40 42/28-10/40 42/14-10/80 42/14-30/40 42/14-50/40 42/70-10/40 42/14-70/40 42/98-10/40