Subtract 80/9 from 16/45
1st number: 16/45, 2nd number: 8 8/9
16/45 - 80/9 is -128/15.
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,
16/45 = 16 × 1/45 × 1 = 16/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
80/9 = 80 × 5/9 × 5 = 400/45 - Subtract the two like fractions:
16/45 - 400/45 = 16 - 400/45 = -384/45 - After reducing the fraction, the answer is -128/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/45-80/9 16/90-80/9 16/45-80/18 48/45-80/9 16/45-80/27 80/45-80/9 16/45-80/45 16/45-80/63