Subtract 4/8 from 70/42
1st number: 1 28/42, 2nd number: 4/8
70/42 - 4/8 is 7/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 42 × 4 = 168,
70/42 = 70 × 4/42 × 4 = 280/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
4/8 = 4 × 21/8 × 21 = 84/168 - Subtract the two like fractions:
280/168 - 84/168 = 280 - 84/168 = 196/168 - After reducing the fraction, the answer is 7/6
- In mixed form: 11/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/84-4/8 70/42-4/16 70/42-12/8 70/42-4/24 70/42-20/8 70/42-4/40 70/42-28/8 70/42-4/56