Subtract 3/70 from 2/84
2/84 - 3/70 is -2/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 70 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
2/84 = 2 × 5/84 × 5 = 10/420 - Likewise, for the 2nd fraction, since 70 × 6 = 420,
3/70 = 3 × 6/70 × 6 = 18/420 - Subtract the two like fractions:
10/420 - 18/420 = 10 - 18/420 = -8/420 - After reducing the fraction, the answer is -2/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/84-3/70 2/84-6/70 6/84-3/70 2/84-9/70 10/84-3/70 2/84-15/70 14/84-3/70 2/84-21/70