Subtract 18/70 from 8/56
8/56 - 18/70 is -4/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
8/56 = 8 × 5/56 × 5 = 40/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
18/70 = 18 × 4/70 × 4 = 72/280 - Subtract the two like fractions:
40/280 - 72/280 = 40 - 72/280 = -32/280 - After reducing the fraction, the answer is -4/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/56-18/70 8/56-36/70 24/56-18/70 8/56-54/70 40/56-18/70 8/56-90/70