Subtract 84/70 from 7/8
1st number: 7/8, 2nd number: 1 14/70
7/8 - 84/70 is -13/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
7/8 = 7 × 35/8 × 35 = 245/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
84/70 = 84 × 4/70 × 4 = 336/280 - Subtract the two like fractions:
245/280 - 336/280 = 245 - 336/280 = -91/280 - After reducing the fraction, the answer is -13/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/8-84/70 7/16-84/70 21/8-84/70 7/24-84/70 35/8-84/70 7/40-84/70 49/8-84/70 7/56-84/70