Subtract 80/84 from 18/25
18/25 - 80/84 is -122/525.
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,
18/25 = 18 × 84/25 × 84 = 1512/2100 - Likewise, for the 2nd fraction, since 84 × 25 = 2100,
80/84 = 80 × 25/84 × 25 = 2000/2100 - Subtract the two like fractions:
1512/2100 - 2000/2100 = 1512 - 2000/2100 = -488/2100 - After reducing the fraction, the answer is -122/525
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