Answers

Subtract 54/18 from 48/21

1^st number: 2 6/21, 2^nd number: 3 0/18

48/21 - 54/18 is -5/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 21 × 6 = 126,
   48/21 = 48 × 6/21 × 6 = 288/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   54/18 = 54 × 7/18 × 7 = 378/126
4. Subtract the two like fractions:
   288/126 - 378/126 = 288 - 378/126 = -90/126
5. After reducing the fraction, the answer is -5/7

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