Subtract 42/56 from 5/20
5/20 - 42/56 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 56 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 20 × 14 = 280,
5/20 = 5 × 14/20 × 14 = 70/280 - Likewise, for the 2nd fraction, since 56 × 5 = 280,
42/56 = 42 × 5/56 × 5 = 210/280 - Subtract the two like fractions:
70/280 - 210/280 = 70 - 210/280 = -140/280 - After reducing the fraction, the answer is -1/2
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