Subtract 15/84 from 54/18
1st number: 3 0/18, 2nd number: 15/84
54/18 - 15/84 is 79/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
54/18 = 54 × 14/18 × 14 = 756/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
15/84 = 15 × 3/84 × 3 = 45/252 - Subtract the two like fractions:
756/252 - 45/252 = 756 - 45/252 = 711/252 - After reducing the fraction, the answer is 79/28
- In mixed form: 223/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18-30/84 54/36-15/84 54/18-45/84 54/18-75/84 54/90-15/84