Subtract 70/8 from 4/90
1st number: 4/90, 2nd number: 8 6/8
4/90 - 70/8 is -1567/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 8 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
4/90 = 4 × 4/90 × 4 = 16/360 - Likewise, for the 2nd fraction, since 8 × 45 = 360,
70/8 = 70 × 45/8 × 45 = 3150/360 - Subtract the two like fractions:
16/360 - 3150/360 = 16 - 3150/360 = -3134/360 - After reducing the fraction, the answer is -1567/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/90-70/8 4/90-70/16 12/90-70/8 4/90-70/24 20/90-70/8 4/90-70/40 28/90-70/8 4/90-70/56