Subtract 42/20 from 25/4
1st number: 6 1/4, 2nd number: 2 2/20
25/4 - 42/20 is 83/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
25/4 = 25 × 5/4 × 5 = 125/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
42/20 = 42 × 1/20 × 1 = 42/20 - Subtract the two like fractions:
125/20 - 42/20 = 125 - 42/20 = 83/20 - In mixed form: 43/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/4-42/20 25/4-84/20 25/8-42/20 25/4-42/40 75/4-42/20 25/12-42/20 25/4-42/60 25/20-42/20 25/28-42/20