Subtract 16/20 from 42/10
1st number: 4 2/10, 2nd number: 16/20
42/10 - 16/20 is 17/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
42/10 = 42 × 2/10 × 2 = 84/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
16/20 = 16 × 1/20 × 1 = 16/20 - Subtract the two like fractions:
84/20 - 16/20 = 84 - 16/20 = 68/20 - After reducing the fraction, the answer is 17/5
- In mixed form: 32/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10-16/20 42/10-32/20 42/20-16/20 42/10-16/40 42/10-48/20 42/30-16/20 42/10-16/60 42/10-80/20 42/50-16/20 42/70-16/20