Subtract 15/70 from 54/12
1st number: 4 6/12, 2nd number: 15/70
54/12 - 15/70 is 30/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 12 × 35 = 420,
54/12 = 54 × 35/12 × 35 = 1890/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
15/70 = 15 × 6/70 × 6 = 90/420 - Subtract the two like fractions:
1890/420 - 90/420 = 1890 - 90/420 = 1800/420 - After reducing the fraction, the answer is 30/7
- In mixed form: 42/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/12-30/70 54/24-15/70 54/12-45/70 54/36-15/70 54/12-75/70 54/60-15/70 54/84-15/70