Subtract 42/75 from 20/12
1st number: 1 8/12, 2nd number: 42/75
20/12 - 42/75 is 83/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 12 × 25 = 300,
20/12 = 20 × 25/12 × 25 = 500/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
42/75 = 42 × 4/75 × 4 = 168/300 - Subtract the two like fractions:
500/300 - 168/300 = 500 - 168/300 = 332/300 - After reducing the fraction, the answer is 83/75
- In mixed form: 18/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-42/75 20/12-84/75 20/24-42/75 60/12-42/75 20/36-42/75 20/60-42/75 20/84-42/75