Subtract 20/16 from 42/6
1st number: 7 0/6, 2nd number: 1 4/16
42/6 - 20/16 is 23/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 16 is 48
Next, find the equivalent fraction of both fractional numbers with denominator 48 - For the 1st fraction, since 6 × 8 = 48,
42/6 = 42 × 8/6 × 8 = 336/48 - Likewise, for the 2nd fraction, since 16 × 3 = 48,
20/16 = 20 × 3/16 × 3 = 60/48 - Subtract the two like fractions:
336/48 - 60/48 = 336 - 60/48 = 276/48 - After reducing the fraction, the answer is 23/4
- In mixed form: 53/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6-20/16 42/6-40/16 42/12-20/16 42/6-20/32 42/6-60/16 42/18-20/16 42/6-20/48 42/30-20/16 42/6-20/80