Subtract 18/54 from 30/15
1st number: 2 0/15, 2nd number: 18/54
30/15 - 18/54 is 5/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 15 × 18 = 270,
30/15 = 30 × 18/15 × 18 = 540/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
18/54 = 18 × 5/54 × 5 = 90/270 - Subtract the two like fractions:
540/270 - 90/270 = 540 - 90/270 = 450/270 - After reducing the fraction, the answer is 5/3
- In mixed form: 12/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15-18/54 30/15-36/54 90/15-18/54 30/45-18/54 30/15-90/54 30/75-18/54