Answers

Subtract 63/40 from 84/54

1^st number: 1 30/54, 2^nd number: 1 23/40

84/54 - 63/40 is -7/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 40 is 1080
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1080
2. For the 1st fraction, since 54 × 20 = 1080,
   84/54 = 84 × 20/54 × 20 = 1680/1080
3. Likewise, for the 2nd fraction, since 40 × 27 = 1080,
   63/40 = 63 × 27/40 × 27 = 1701/1080
4. Subtract the two like fractions:
   1680/1080 - 1701/1080 = 1680 - 1701/1080 = -21/1080
5. After reducing the fraction, the answer is -7/360

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