Answers

Add 90/54 and 63/12

1^st number: 1 36/54, 2^nd number: 5 3/12

90/54 + 63/12 is 83/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 12 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 12 × 9 = 108,
   63/12 = 63 × 9/12 × 9 = 567/108
4. Add the two like fractions:
   180/108 + 567/108 = 180 + 567/108 = 747/108
5. 747/108 simplified gives 83/12
6. So, 90/54 + 63/12 = 83/12
   In mixed form: 611/12

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