Subtract 1/18 from 24/42
24/42 - 1/18 is 65/126.
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,
1/18 = 1 × 7/18 × 7 = 7/126 - Subtract the two like fractions:
72/126 - 7/126 = 72 - 7/126 = 65/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/42-1/18 24/42-2/18 24/84-1/18 24/42-1/36 72/42-1/18 24/42-3/18 24/42-1/54 24/42-5/18 24/42-1/90 24/42-7/18