Subtract 6/18 from 24/42
24/42 - 6/18 is 5/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
24/42 = 24 × 3/42 × 3 = 72/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
6/18 = 6 × 7/18 × 7 = 42/126 - Subtract the two like fractions:
72/126 - 42/126 = 72 - 42/126 = 30/126 - After reducing the fraction, the answer is 5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/42-6/18 24/42-12/18 24/84-6/18 24/42-6/36 72/42-6/18 24/42-6/54 24/42-30/18 24/42-6/90 24/42-42/18