Subtract 5/48 from 20/45
20/45 - 5/48 is 49/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
20/45 = 20 × 16/45 × 16 = 320/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
5/48 = 5 × 15/48 × 15 = 75/720 - Subtract the two like fractions:
320/720 - 75/720 = 320 - 75/720 = 245/720 - After reducing the fraction, the answer is 49/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/45-5/48 20/45-10/48 20/90-5/48 20/45-5/96 60/45-5/48 20/45-15/48 20/45-25/48 20/45-35/48