Subtract 8/84 from 7/70
7/70 - 8/84 is 1/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
7/70 = 7 × 6/70 × 6 = 42/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
8/84 = 8 × 5/84 × 5 = 40/420 - Subtract the two like fractions:
42/420 - 40/420 = 42 - 40/420 = 2/420 - After reducing the fraction, the answer is 1/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70-8/84 7/70-16/84 21/70-8/84 7/70-24/84 35/70-8/84 7/70-40/84 49/70-8/84 7/70-56/84