Subtract 20/9 from 75/45
1st number: 1 30/45, 2nd number: 2 2/9
75/45 - 20/9 is -5/9.
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,
75/45 = 75 × 1/45 × 1 = 75/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
20/9 = 20 × 5/9 × 5 = 100/45 - Subtract the two like fractions:
75/45 - 100/45 = 75 - 100/45 = -25/45 - After reducing the fraction, the answer is -5/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/45-40/9 75/90-20/9 75/45-20/18 75/45-60/9 75/45-20/27 75/45-20/45 75/45-20/63