Subtract 15/20 from 50/45
1st number: 1 5/45, 2nd number: 15/20
50/45 - 15/20 is 13/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
50/45 = 50 × 4/45 × 4 = 200/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
15/20 = 15 × 9/20 × 9 = 135/180 - Subtract the two like fractions:
200/180 - 135/180 = 200 - 135/180 = 65/180 - After reducing the fraction, the answer is 13/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/45-30/20 50/90-15/20 50/45-15/40 50/45-45/20 50/45-15/60 50/45-75/20