Subtract 24/80 from 45/90
45/90 - 24/80 is 1/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
45/90 = 45 × 8/90 × 8 = 360/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
24/80 = 24 × 9/80 × 9 = 216/720 - Subtract the two like fractions:
360/720 - 216/720 = 360 - 216/720 = 144/720 - After reducing the fraction, the answer is 1/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 45/90-48/80 45/90-72/80