Answers

Add 81/54 and 42/90

1^st number: 1 27/54, 2^nd number: 42/90

81/54 + 42/90 is 59/30.

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,
   81/54 = 81 × 5/54 × 5 = 405/270
3. Likewise, for the 2nd fraction, since 90 × 3 = 270,
   42/90 = 42 × 3/90 × 3 = 126/270
4. Add the two like fractions:
   405/270 + 126/270 = 405 + 126/270 = 531/270
5. 531/270 simplified gives 59/30
6. So, 81/54 + 42/90 = 59/30
   In mixed form: 129/30

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