Subtract 8/70 from 42/12
1st number: 3 6/12, 2nd number: 8/70
42/12 - 8/70 is 237/70.
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,
42/12 = 42 × 35/12 × 35 = 1470/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
8/70 = 8 × 6/70 × 6 = 48/420 - Subtract the two like fractions:
1470/420 - 48/420 = 1470 - 48/420 = 1422/420 - After reducing the fraction, the answer is 237/70
- In mixed form: 327/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/12-8/70 42/12-16/70 42/24-8/70 42/12-24/70 42/36-8/70 42/12-40/70 42/60-8/70 42/12-56/70 42/84-8/70