Subtract 42/75 from 20/36
20/36 - 42/75 is -1/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 75 is 900
Next, find the equivalent fraction of both fractional numbers with denominator 900 - For the 1st fraction, since 36 × 25 = 900,
20/36 = 20 × 25/36 × 25 = 500/900 - Likewise, for the 2nd fraction, since 75 × 12 = 900,
42/75 = 42 × 12/75 × 12 = 504/900 - Subtract the two like fractions:
500/900 - 504/900 = 500 - 504/900 = -4/900 - After reducing the fraction, the answer is -1/225
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