Subtract 18/9 from 24/84
1st number: 24/84, 2nd number: 2 0/9
24/84 - 18/9 is -12/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
24/84 = 24 × 3/84 × 3 = 72/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
18/9 = 18 × 28/9 × 28 = 504/252 - Subtract the two like fractions:
72/252 - 504/252 = 72 - 504/252 = -432/252 - After reducing the fraction, the answer is -12/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/84-18/9 24/84-36/9 72/84-18/9 24/84-54/9 24/84-18/27 24/84-90/9 24/84-18/45 24/84-18/63