Subtract 24/8 from 45/18
1st number: 2 9/18, 2nd number: 3 0/8
45/18 - 24/8 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
45/18 = 45 × 4/18 × 4 = 180/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
24/8 = 24 × 9/8 × 9 = 216/72 - Subtract the two like fractions:
180/72 - 216/72 = 180 - 216/72 = -36/72 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18-24/8 45/18-48/8 45/36-24/8 45/18-24/16 45/18-72/8 45/54-24/8 45/90-24/8 45/18-24/40 45/18-24/56