Subtract 20/75 from 9/42
9/42 - 20/75 is -11/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 75 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
9/42 = 9 × 25/42 × 25 = 225/1050 - Likewise, for the 2nd fraction, since 75 × 14 = 1050,
20/75 = 20 × 14/75 × 14 = 280/1050 - Subtract the two like fractions:
225/1050 - 280/1050 = 225 - 280/1050 = -55/1050 - After reducing the fraction, the answer is -11/210
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