Subtract 45/70 from 30/12
1st number: 2 6/12, 2nd number: 45/70
30/12 - 45/70 is 13/7.
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,
30/12 = 30 × 35/12 × 35 = 1050/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
45/70 = 45 × 6/70 × 6 = 270/420 - Subtract the two like fractions:
1050/420 - 270/420 = 1050 - 270/420 = 780/420 - After reducing the fraction, the answer is 13/7
- In mixed form: 16/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-45/70 30/12-90/70 30/24-45/70 90/12-45/70 30/36-45/70 30/60-45/70 30/84-45/70