Answers

Add 90/15 and 54/12

1^st number: 6 0/15, 2^nd number: 4 6/12

90/15 + 54/12 is 21/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 12 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
   90/15 = 90 × 4/15 × 4 = 360/60
3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
   54/12 = 54 × 5/12 × 5 = 270/60
4. Add the two like fractions:
   360/60 + 270/60 = 360 + 270/60 = 630/60
5. 630/60 simplified gives 21/2
6. So, 90/15 + 54/12 = 21/2
   In mixed form: 101/2

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