Subtract 18/24 from 30/45
30/45 - 18/24 is -1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 24 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
30/45 = 30 × 8/45 × 8 = 240/360 - Likewise, for the 2nd fraction, since 24 × 15 = 360,
18/24 = 18 × 15/24 × 15 = 270/360 - Subtract the two like fractions:
240/360 - 270/360 = 240 - 270/360 = -30/360 - After reducing the fraction, the answer is -1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45-18/24 30/45-36/24 30/90-18/24 30/45-18/48 90/45-18/24 30/45-54/24 30/45-18/72 30/45-90/24