Subtract 10/45 from 27/20
1st number: 1 7/20, 2nd number: 10/45
27/20 - 10/45 is 203/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
27/20 = 27 × 9/20 × 9 = 243/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
10/45 = 10 × 4/45 × 4 = 40/180 - Subtract the two like fractions:
243/180 - 40/180 = 243 - 40/180 = 203/180 - In mixed form: 123/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20-10/45 27/20-20/45 27/40-10/45 27/20-10/90 81/20-10/45 27/20-30/45 27/60-10/45 27/20-50/45 27/20-70/45