Subtract 10/36 from 20/45
20/45 - 10/36 is 1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
20/45 = 20 × 4/45 × 4 = 80/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
10/36 = 10 × 5/36 × 5 = 50/180 - Subtract the two like fractions:
80/180 - 50/180 = 80 - 50/180 = 30/180 - After reducing the fraction, the answer is 1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45-10/36 20/45-20/36 20/90-10/36 20/45-10/72 60/45-10/36 20/45-30/36 20/45-50/36 20/45-70/36