Subtract 75/9 from 5/7
1st number: 5/7, 2nd number: 8 3/9
5/7 - 75/9 is -160/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
5/7 = 5 × 9/7 × 9 = 45/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
75/9 = 75 × 7/9 × 7 = 525/63 - Subtract the two like fractions:
45/63 - 525/63 = 45 - 525/63 = -480/63 - After reducing the fraction, the answer is -160/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7-75/9 5/14-75/9 5/7-75/18 15/7-75/9 5/21-75/9 5/7-75/27 25/7-75/9 5/35-75/9 5/7-75/45 35/7-75/9 5/49-75/9 5/7-75/63