Subtract 24/9 from 84/42
1st number: 2 0/42, 2nd number: 2 6/9
84/42 - 24/9 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 9 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
84/42 = 84 × 3/42 × 3 = 252/126 - Likewise, for the 2nd fraction, since 9 × 14 = 126,
24/9 = 24 × 14/9 × 14 = 336/126 - Subtract the two like fractions:
252/126 - 336/126 = 252 - 336/126 = -84/126 - After reducing the fraction, the answer is -2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/42-48/9 84/42-24/18 84/42-72/9 84/42-24/27 84/42-24/45 84/42-24/63