Subtract 84/54 from 40/15
1st number: 2 10/15, 2nd number: 1 30/54
40/15 - 84/54 is 10/9.
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,
40/15 = 40 × 18/15 × 18 = 720/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
84/54 = 84 × 5/54 × 5 = 420/270 - Subtract the two like fractions:
720/270 - 420/270 = 720 - 420/270 = 300/270 - After reducing the fraction, the answer is 10/9
- In mixed form: 11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15-84/54 40/30-84/54 40/45-84/54 40/75-84/54