Answers

Add 75/54 and 10/90

1^st number: 1 21/54, 2^nd number: 10/90

75/54 + 10/90 is 3/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 90 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 54 × 5 = 270,
   75/54 = 75 × 5/54 × 5 = 375/270
3. Likewise, for the 2nd fraction, since 90 × 3 = 270,
   10/90 = 10 × 3/90 × 3 = 30/270
4. Add the two like fractions:
   375/270 + 30/270 = 375 + 30/270 = 405/270
5. 405/270 simplified gives 3/2
6. So, 75/54 + 10/90 = 3/2
   In mixed form: 11/2

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