Answers

Subtract 21/36 from 90/54

1^st number: 1 36/54, 2^nd number: 21/36

90/54 - 21/36 is 13/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 36 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 54 × 2 = 108,
   90/54 = 90 × 2/54 × 2 = 180/108
3. Likewise, for the 2nd fraction, since 36 × 3 = 108,
   21/36 = 21 × 3/36 × 3 = 63/108
4. Subtract the two like fractions:
   180/108 - 63/108 = 180 - 63/108 = 117/108
5. After reducing the fraction, the answer is 13/12
6. In mixed form: 11/12

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