Answers

Subtract 54/48 from 21/40

1^st number: 21/40, 2^nd number: 1 6/48

21/40 - 54/48 is -3/5.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 48 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 40 × 6 = 240,
   21/40 = 21 × 6/40 × 6 = 126/240
3. Likewise, for the 2nd fraction, since 48 × 5 = 240,
   54/48 = 54 × 5/48 × 5 = 270/240
4. Subtract the two like fractions:
   126/240 - 270/240 = 126 - 270/240 = -144/240
5. After reducing the fraction, the answer is -3/5

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