Subtract 1/12 from 75/42
1st number: 1 33/42, 2nd number: 1/12
75/42 - 1/12 is 143/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
75/42 = 75 × 2/42 × 2 = 150/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
1/12 = 1 × 7/12 × 7 = 7/84 - Subtract the two like fractions:
150/84 - 7/84 = 150 - 7/84 = 143/84 - In mixed form: 159/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/42-2/12 75/84-1/12 75/42-1/24 75/42-3/12 75/42-1/36 75/42-5/12 75/42-1/60 75/42-7/12 75/42-1/84