Subtract 75/3 from 18/42
1st number: 18/42, 2nd number: 25 0/3
18/42 - 75/3 is -172/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
18/42 = 18 × 1/42 × 1 = 18/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
75/3 = 75 × 14/3 × 14 = 1050/42 - Subtract the two like fractions:
18/42 - 1050/42 = 18 - 1050/42 = -1032/42 - After reducing the fraction, the answer is -172/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42-75/3 18/84-75/3 18/42-75/6 54/42-75/3 18/42-75/9 90/42-75/3 18/42-75/15 18/42-75/21