Subtract 8/12 from 4/70
4/70 - 8/12 is -64/105.
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,
4/70 = 4 × 6/70 × 6 = 24/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
8/12 = 8 × 35/12 × 35 = 280/420 - Subtract the two like fractions:
24/420 - 280/420 = 24 - 280/420 = -256/420 - After reducing the fraction, the answer is -64/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/70-8/12 4/70-16/12 4/70-8/24 12/70-8/12 4/70-24/12 4/70-8/36 20/70-8/12 4/70-40/12 4/70-8/60 28/70-8/12 4/70-56/12 4/70-8/84