Subtract 70/42 from 81/6
1st number: 13 3/6, 2nd number: 1 28/42
81/6 - 70/42 is 71/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
81/6 = 81 × 7/6 × 7 = 567/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
70/42 = 70 × 1/42 × 1 = 70/42 - Subtract the two like fractions:
567/42 - 70/42 = 567 - 70/42 = 497/42 - After reducing the fraction, the answer is 71/6
- In mixed form: 115/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/12-70/42 81/6-70/84 81/18-70/42 81/30-70/42 81/42-70/42