Subtract 7/56 from 3/70
3/70 - 7/56 is -23/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
3/70 = 3 × 4/70 × 4 = 12/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
7/56 = 7 × 5/56 × 5 = 35/280 - Subtract the two like fractions:
12/280 - 35/280 = 12 - 35/280 = -23/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/70-7/56 3/70-14/56 9/70-7/56 3/70-21/56 15/70-7/56 3/70-35/56 21/70-7/56 3/70-49/56