Subtract 4/50 from 42/20
1st number: 2 2/20, 2nd number: 4/50
42/20 - 4/50 is 101/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
42/20 = 42 × 5/20 × 5 = 210/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
4/50 = 4 × 2/50 × 2 = 8/100 - Subtract the two like fractions:
210/100 - 8/100 = 210 - 8/100 = 202/100 - After reducing the fraction, the answer is 101/50
- In mixed form: 21/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-4/50 42/20-8/50 42/40-4/50 42/20-12/50 42/60-4/50 42/20-20/50 42/20-28/50