Subtract 20/75 from 7/9
7/9 - 20/75 is 23/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 75 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 9 × 25 = 225,
7/9 = 7 × 25/9 × 25 = 175/225 - Likewise, for the 2nd fraction, since 75 × 3 = 225,
20/75 = 20 × 3/75 × 3 = 60/225 - Subtract the two like fractions:
175/225 - 60/225 = 175 - 60/225 = 115/225 - After reducing the fraction, the answer is 23/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/9-20/75 7/9-40/75 7/18-20/75 21/9-20/75 7/9-60/75 7/27-20/75 35/9-20/75 7/45-20/75 49/9-20/75 7/63-20/75