Subtract 40/70 from 4/56
4/56 - 40/70 is -1/2.
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,
4/56 = 4 × 5/56 × 5 = 20/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
40/70 = 40 × 4/70 × 4 = 160/280 - Subtract the two like fractions:
20/280 - 160/280 = 20 - 160/280 = -140/280 - After reducing the fraction, the answer is -1/2
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