Subtract 20/50 from 7/20
7/20 - 20/50 is -1/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
7/20 = 7 × 5/20 × 5 = 35/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
20/50 = 20 × 2/50 × 2 = 40/100 - Subtract the two like fractions:
35/100 - 40/100 = 35 - 40/100 = -5/100 - After reducing the fraction, the answer is -1/20
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