Subtract 40/42 from 48/9
1st number: 5 3/9, 2nd number: 40/42
48/9 - 40/42 is 92/21.
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,
48/9 = 48 × 14/9 × 14 = 672/126 - Likewise, for the 2nd fraction, since 42 × 3 = 126,
40/42 = 40 × 3/42 × 3 = 120/126 - Subtract the two like fractions:
672/126 - 120/126 = 672 - 120/126 = 552/126 - After reducing the fraction, the answer is 92/21
- In mixed form: 48/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/9-40/42 48/9-80/42 48/18-40/42 48/9-40/84 48/27-40/42 48/45-40/42 48/63-40/42