Subtract 54/80 from 24/45
24/45 - 54/80 is -17/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
24/45 = 24 × 16/45 × 16 = 384/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
54/80 = 54 × 9/80 × 9 = 486/720 - Subtract the two like fractions:
384/720 - 486/720 = 384 - 486/720 = -102/720 - After reducing the fraction, the answer is -17/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/45-54/80 24/90-54/80 72/45-54/80