Answers

Subtract 90/54 from 84/30

1^st number: 2 24/30, 2^nd number: 1 36/54

84/30 - 90/54 is 17/15.

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,
   84/30 = 84 × 9/30 × 9 = 756/270
3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
   90/54 = 90 × 5/54 × 5 = 450/270
4. Subtract the two like fractions:
   756/270 - 450/270 = 756 - 450/270 = 306/270
5. After reducing the fraction, the answer is 17/15
6. In mixed form: 12/15

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