Subtract 9/42 from 24/72
24/72 - 9/42 is 5/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 42 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
24/72 = 24 × 7/72 × 7 = 168/504 - Likewise, for the 2nd fraction, since 42 × 12 = 504,
9/42 = 9 × 12/42 × 12 = 108/504 - Subtract the two like fractions:
168/504 - 108/504 = 168 - 108/504 = 60/504 - After reducing the fraction, the answer is 5/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/72-9/42 24/72-18/42 24/72-9/84 24/72-27/42 24/72-45/42 24/72-63/42