Answers

Subtract 84/54 from 42/30

1^st number: 1 12/30, 2^nd number: 1 30/54

42/30 - 84/54 is -7/45.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 54 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 30 × 9 = 270,
   42/30 = 42 × 9/30 × 9 = 378/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   84/54 = 84 × 5/54 × 5 = 420/270
4. Subtract the two like fractions:
   378/270 - 420/270 = 378 - 420/270 = -42/270
5. After reducing the fraction, the answer is -7/45

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