Subtract 18/70 from 30/12
1st number: 2 6/12, 2nd number: 18/70
30/12 - 18/70 is 157/70.
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,
18/70 = 18 × 6/70 × 6 = 108/420 - Subtract the two like fractions:
1050/420 - 108/420 = 1050 - 108/420 = 942/420 - After reducing the fraction, the answer is 157/70
- In mixed form: 217/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/12-18/70 30/12-36/70 30/24-18/70 90/12-18/70 30/12-54/70 30/36-18/70 30/12-90/70 30/60-18/70 30/84-18/70