Subtract 30/84 from 54/15
1st number: 3 9/15, 2nd number: 30/84
54/15 - 30/84 is 227/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
54/15 = 54 × 28/15 × 28 = 1512/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
30/84 = 30 × 5/84 × 5 = 150/420 - Subtract the two like fractions:
1512/420 - 150/420 = 1512 - 150/420 = 1362/420 - After reducing the fraction, the answer is 227/70
- In mixed form: 317/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15-60/84 54/30-30/84 54/15-90/84 54/45-30/84 54/75-30/84