Subtract 45/70 from 72/12
1st number: 6 0/12, 2nd number: 45/70
72/12 - 45/70 is 75/14.
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,
72/12 = 72 × 35/12 × 35 = 2520/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
45/70 = 45 × 6/70 × 6 = 270/420 - Subtract the two like fractions:
2520/420 - 270/420 = 2520 - 270/420 = 2250/420 - After reducing the fraction, the answer is 75/14
- In mixed form: 55/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/12-90/70 72/24-45/70 72/36-45/70 72/60-45/70 72/84-45/70