Subtract 42/12 from 10/70
1st number: 10/70, 2nd number: 3 6/12
10/70 - 42/12 is -47/14.
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,
10/70 = 10 × 6/70 × 6 = 60/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
42/12 = 42 × 35/12 × 35 = 1470/420 - Subtract the two like fractions:
60/420 - 1470/420 = 60 - 1470/420 = -1410/420 - After reducing the fraction, the answer is -47/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/70-42/12 10/70-84/12 10/70-42/24 30/70-42/12 10/70-42/36 50/70-42/12 10/70-42/60 10/70-42/84