Answers

Add 90/72 and 54/48

1^st number: 1 18/72, 2^nd number: 1 6/48

90/72 + 54/48 is 19/8.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 48 is 144
   
   Next, find the equivalent fraction of both fractional numbers with denominator 144
2. For the 1st fraction, since 72 × 2 = 144,
   90/72 = 90 × 2/72 × 2 = 180/144
3. Likewise, for the 2nd fraction, since 48 × 3 = 144,
   54/48 = 54 × 3/48 × 3 = 162/144
4. Add the two like fractions:
   180/144 + 162/144 = 180 + 162/144 = 342/144
5. 342/144 simplified gives 19/8
6. So, 90/72 + 54/48 = 19/8
   In mixed form: 23/8

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