Subtract 14/40 from 42/20
1st number: 2 2/20, 2nd number: 14/40
42/20 - 14/40 is 7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
42/20 = 42 × 2/20 × 2 = 84/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
14/40 = 14 × 1/40 × 1 = 14/40 - Subtract the two like fractions:
84/40 - 14/40 = 84 - 14/40 = 70/40 - After reducing the fraction, the answer is 7/4
- In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-14/40 42/20-28/40 42/40-14/40 42/20-14/80 42/20-42/40 42/60-14/40 42/20-70/40 42/20-98/40