Answers

Add 90/12 and 54/18

1^st number: 7 6/12, 2^nd number: 3 0/18

90/12 + 54/18 is 21/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 18 is 36
   
   Next, find the equivalent fraction of both fractional numbers with denominator 36
2. For the 1st fraction, since 12 × 3 = 36,
   90/12 = 90 × 3/12 × 3 = 270/36
3. Likewise, for the 2nd fraction, since 18 × 2 = 36,
   54/18 = 54 × 2/18 × 2 = 108/36
4. Add the two like fractions:
   270/36 + 108/36 = 270 + 108/36 = 378/36
5. 378/36 simplified gives 21/2
6. So, 90/12 + 54/18 = 21/2
   In mixed form: 101/2

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