Subtract 90/10 from 70/9
1st number: 7 7/9, 2nd number: 9 0/10
70/9 - 90/10 is -11/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
70/9 = 70 × 10/9 × 10 = 700/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
90/10 = 90 × 9/10 × 9 = 810/90 - Subtract the two like fractions:
700/90 - 810/90 = 700 - 810/90 = -110/90 - After reducing the fraction, the answer is -11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/18-90/10 70/9-90/20 70/27-90/10 70/9-90/30 70/45-90/10 70/9-90/50 70/63-90/10 70/9-90/70