Subtract 9/90 from 70/8
1st number: 8 6/8, 2nd number: 9/90
70/8 - 9/90 is 173/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
70/8 = 70 × 45/8 × 45 = 3150/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
9/90 = 9 × 4/90 × 4 = 36/360 - Subtract the two like fractions:
3150/360 - 36/360 = 3150 - 36/360 = 3114/360 - After reducing the fraction, the answer is 173/20
- In mixed form: 813/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/8-18/90 70/16-9/90 70/8-27/90 70/24-9/90 70/8-45/90 70/40-9/90 70/8-63/90 70/56-9/90