Answers

Subtract 84/25 from 15/20

1^st number: 15/20, 2^nd number: 3 9/25

15/20 - 84/25 is -261/100.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 25 is 100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 100
2. For the 1st fraction, since 20 × 5 = 100,
   15/20 = 15 × 5/20 × 5 = 75/100
3. Likewise, for the 2nd fraction, since 25 × 4 = 100,
   84/25 = 84 × 4/25 × 4 = 336/100
4. Subtract the two like fractions:
   75/100 - 336/100 = 75 - 336/100 = -261/100

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