Subtract 20/84 from 25/75
25/75 - 20/84 is 2/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 75 × 28 = 2100,
25/75 = 25 × 28/75 × 28 = 700/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
20/84 = 20 × 25/84 × 25 = 500/2100 - Subtract the two like fractions:
700/2100 - 500/2100 = 700 - 500/2100 = 200/2100 - After reducing the fraction, the answer is 2/21
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