Subtract 72/54 from 9/15
1st number: 9/15, 2nd number: 1 18/54
9/15 - 72/54 is -11/15.
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,
9/15 = 9 × 18/15 × 18 = 162/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
72/54 = 72 × 5/54 × 5 = 360/270 - Subtract the two like fractions:
162/270 - 360/270 = 162 - 360/270 = -198/270 - After reducing the fraction, the answer is -11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15-72/54 9/30-72/54 27/15-72/54 9/45-72/54 45/15-72/54 9/75-72/54 63/15-72/54