Subtract 27/7 from 24/42
1st number: 24/42, 2nd number: 3 6/7
24/42 - 27/7 is -23/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
24/42 = 24 × 1/42 × 1 = 24/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
27/7 = 27 × 6/7 × 6 = 162/42 - Subtract the two like fractions:
24/42 - 162/42 = 24 - 162/42 = -138/42 - After reducing the fraction, the answer is -23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/42-27/7 24/42-54/7 24/84-27/7 24/42-27/14 72/42-27/7 24/42-81/7 24/42-27/21 24/42-27/35 24/42-27/49