Subtract 12/45 from 8/9
8/9 - 12/45 is 28/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 9 × 5 = 45,
8/9 = 8 × 5/9 × 5 = 40/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
12/45 = 12 × 1/45 × 1 = 12/45 - Subtract the two like fractions:
40/45 - 12/45 = 40 - 12/45 = 28/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/9-12/45 8/9-24/45 8/18-12/45 8/9-12/90 24/9-12/45 8/9-36/45 8/27-12/45 40/9-12/45 8/9-60/45 8/45-12/45 56/9-12/45 8/9-84/45 8/63-12/45