Answers

Subtract 72/84 from 18/25

18/25 - 72/84 is -24/175.

Steps for subtracting fractions

1. 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
2. For the 1st fraction, since 25 × 84 = 2100,
   18/25 = 18 × 84/25 × 84 = 1512/2100
3. Likewise, for the 2nd fraction, since 84 × 25 = 2100,
   72/84 = 72 × 25/84 × 25 = 1800/2100
4. Subtract the two like fractions:
   1512/2100 - 1800/2100 = 1512 - 1800/2100 = -288/2100
5. After reducing the fraction, the answer is -24/175

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