Subtract 20/16 from 42/10
1st number: 4 2/10, 2nd number: 1 4/16
42/10 - 20/16 is 59/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 10 × 8 = 80,
42/10 = 42 × 8/10 × 8 = 336/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
20/16 = 20 × 5/16 × 5 = 100/80 - Subtract the two like fractions:
336/80 - 100/80 = 336 - 100/80 = 236/80 - After reducing the fraction, the answer is 59/20
- In mixed form: 219/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10-20/16 42/10-40/16 42/20-20/16 42/10-20/32 42/10-60/16 42/30-20/16 42/10-20/48 42/50-20/16 42/10-20/80 42/70-20/16