Answers

Add 45/12 and 90/48

1^st number: 3 9/12, 2^nd number: 1 42/48

45/12 + 90/48 is 45/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 48 is 48
   
   Next, find the equivalent fraction of both fractional numbers with denominator 48
2. For the 1st fraction, since 12 × 4 = 48,
   45/12 = 45 × 4/12 × 4 = 180/48
3. Likewise, for the 2nd fraction, since 48 × 1 = 48,
   90/48 = 90 × 1/48 × 1 = 90/48
4. Add the two like fractions:
   180/48 + 90/48 = 180 + 90/48 = 270/48
5. 270/48 simplified gives 45/8
6. So, 45/12 + 90/48 = 45/8
   In mixed form: 55/8

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