Subtract 40/42 from 70/8
1st number: 8 6/8, 2nd number: 40/42
70/8 - 40/42 is 655/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
70/8 = 70 × 21/8 × 21 = 1470/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
40/42 = 40 × 4/42 × 4 = 160/168 - Subtract the two like fractions:
1470/168 - 160/168 = 1470 - 160/168 = 1310/168 - After reducing the fraction, the answer is 655/84
- In mixed form: 767/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/8-80/42 70/16-40/42 70/8-40/84 70/24-40/42 70/40-40/42 70/56-40/42