Answers

Subtract 70/42 from 12/54

1^st number: 12/54, 2^nd number: 1 28/42

12/54 - 70/42 is -13/9.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 42 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 54 × 7 = 378,
   12/54 = 12 × 7/54 × 7 = 84/378
3. Likewise, for the 2nd fraction, since 42 × 9 = 378,
   70/42 = 70 × 9/42 × 9 = 630/378
4. Subtract the two like fractions:
   84/378 - 630/378 = 84 - 630/378 = -546/378
5. After reducing the fraction, the answer is -13/9

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