Subtract 45/40 from 24/28
1st number: 24/28, 2nd number: 1 5/40
24/28 - 45/40 is -15/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
24/28 = 24 × 10/28 × 10 = 240/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
45/40 = 45 × 7/40 × 7 = 315/280 - Subtract the two like fractions:
240/280 - 315/280 = 240 - 315/280 = -75/280 - After reducing the fraction, the answer is -15/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/28-45/40 24/28-90/40 24/56-45/40 24/28-45/80 72/28-45/40 24/84-45/40