Answers

Subtract 15/20 from 18/25

18/25 - 15/20 is -3/100.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 25 and 20 is 100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 100
2. For the 1st fraction, since 25 × 4 = 100,
   18/25 = 18 × 4/25 × 4 = 72/100
3. Likewise, for the 2nd fraction, since 20 × 5 = 100,
   15/20 = 15 × 5/20 × 5 = 75/100
4. Subtract the two like fractions:
   72/100 - 75/100 = 72 - 75/100 = -3/100

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