Subtract 8/42 from 16/12
1st number: 1 4/12, 2nd number: 8/42
16/12 - 8/42 is 8/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
16/12 = 16 × 7/12 × 7 = 112/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
8/42 = 8 × 2/42 × 2 = 16/84 - Subtract the two like fractions:
112/84 - 16/84 = 112 - 16/84 = 96/84 - After reducing the fraction, the answer is 8/7
- In mixed form: 11/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/12-8/42 16/12-16/42 16/24-8/42 16/12-8/84 48/12-8/42 16/12-24/42 16/36-8/42 80/12-8/42 16/12-40/42 16/60-8/42 16/12-56/42 16/84-8/42