Answers

Subtract 21/54 from 84/40

1^st number: 2 4/40, 2^nd number: 21/54

84/40 - 21/54 is 77/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 54 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 40 × 27 = 1080,
   84/40 = 84 × 27/40 × 27 = 2268/1080
3. Likewise, for the 2nd fraction, since 54 × 20 = 1080,
   21/54 = 21 × 20/54 × 20 = 420/1080
4. Subtract the two like fractions:
   2268/1080 - 420/1080 = 2268 - 420/1080 = 1848/1080
5. After reducing the fraction, the answer is 77/45
6. In mixed form: 132/45

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