Subtract 8/42 from 36/9
1st number: 4 0/9, 2nd number: 8/42
36/9 - 8/42 is 80/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 42 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 9 × 14 = 126,
36/9 = 36 × 14/9 × 14 = 504/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
8/42 = 8 × 3/42 × 3 = 24/126 - Subtract the two like fractions:
504/126 - 24/126 = 504 - 24/126 = 480/126 - After reducing the fraction, the answer is 80/21
- In mixed form: 317/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/9-8/42 36/9-16/42 36/18-8/42 36/9-8/84 36/9-24/42 36/27-8/42 36/9-40/42 36/45-8/42 36/9-56/42 36/63-8/42