Subtract 20/27 from 45/40
1st number: 1 5/40, 2nd number: 20/27
45/40 - 20/27 is 83/216.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
45/40 = 45 × 27/40 × 27 = 1215/1080 - Likewise, for the 2nd fraction, since 27 × 40 = 1080,
20/27 = 20 × 40/27 × 40 = 800/1080 - Subtract the two like fractions:
1215/1080 - 800/1080 = 1215 - 800/1080 = 415/1080 - After reducing the fraction, the answer is 83/216
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40-20/27 45/40-40/27 45/80-20/27 45/40-20/54 45/40-60/27 45/40-20/81