Subtract 24/45 from 30/80
30/80 - 24/45 is -19/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
30/80 = 30 × 9/80 × 9 = 270/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
24/45 = 24 × 16/45 × 16 = 384/720 - Subtract the two like fractions:
270/720 - 384/720 = 270 - 384/720 = -114/720 - After reducing the fraction, the answer is -19/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80-24/45 30/80-48/45 30/80-24/90 90/80-24/45 30/80-72/45