Subtract 21/84 from 4/25
4/25 - 21/84 is -9/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 84 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 25 × 84 = 2100,
4/25 = 4 × 84/25 × 84 = 336/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
21/84 = 21 × 25/84 × 25 = 525/2100 - Subtract the two like fractions:
336/2100 - 525/2100 = 336 - 525/2100 = -189/2100 - After reducing the fraction, the answer is -9/100
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