Subtract 20/12 from 75/4
1st number: 18 3/4, 2nd number: 1 8/12
75/4 - 20/12 is 205/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
75/4 = 75 × 3/4 × 3 = 225/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
20/12 = 20 × 1/12 × 1 = 20/12 - Subtract the two like fractions:
225/12 - 20/12 = 225 - 20/12 = 205/12 - In mixed form: 171/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/4-40/12 75/8-20/12 75/4-20/24 75/4-60/12 75/12-20/12 75/4-20/36 75/20-20/12 75/4-20/60 75/28-20/12 75/4-20/84