Subtract 70/72 from 90/10
1st number: 9 0/10, 2nd number: 70/72
90/10 - 70/72 is 289/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 10 × 36 = 360,
90/10 = 90 × 36/10 × 36 = 3240/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
70/72 = 70 × 5/72 × 5 = 350/360 - Subtract the two like fractions:
3240/360 - 350/360 = 3240 - 350/360 = 2890/360 - After reducing the fraction, the answer is 289/36
- In mixed form: 81/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20-70/72 90/30-70/72 90/50-70/72 90/70-70/72