Subtract 7/9 from 5/45
5/45 - 7/9 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
5/45 = 5 × 1/45 × 1 = 5/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
7/9 = 7 × 5/9 × 5 = 35/45 - Subtract the two like fractions:
5/45 - 35/45 = 5 - 35/45 = -30/45 - After reducing the fraction, the answer is -2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/45-7/9 5/45-14/9 5/90-7/9 5/45-7/18 15/45-7/9 5/45-21/9 5/45-7/27 25/45-7/9 5/45-35/9 5/45-7/45 35/45-7/9 5/45-49/9 5/45-7/63