Subtract 80/42 from 40/9
1st number: 4 4/9, 2nd number: 1 38/42
40/9 - 80/42 is 160/63.
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,
40/9 = 40 × 14/9 × 14 = 560/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
80/42 = 80 × 3/42 × 3 = 240/126 - Subtract the two like fractions:
560/126 - 240/126 = 560 - 240/126 = 320/126 - After reducing the fraction, the answer is 160/63
- In mixed form: 234/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/9-80/42 40/18-80/42 40/9-80/84 40/27-80/42 40/45-80/42 40/63-80/42