Subtract 30/12 from 9/70
1st number: 9/70, 2nd number: 2 6/12
9/70 - 30/12 is -83/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
9/70 = 9 × 6/70 × 6 = 54/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
30/12 = 30 × 35/12 × 35 = 1050/420 - Subtract the two like fractions:
54/420 - 1050/420 = 54 - 1050/420 = -996/420 - After reducing the fraction, the answer is -83/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/70-30/12 9/70-60/12 9/70-30/24 27/70-30/12 9/70-90/12 9/70-30/36 45/70-30/12 9/70-30/60 63/70-30/12 9/70-30/84