Subtract 18/63 from 24/42
24/42 - 18/63 is 2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 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 63 × 2 = 126,
18/63 = 18 × 2/63 × 2 = 36/126 - Subtract the two like fractions:
72/126 - 36/126 = 72 - 36/126 = 36/126 - After reducing the fraction, the answer is 2/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/42-18/63 24/42-36/63 24/84-18/63 72/42-18/63 24/42-54/63 24/42-90/63