Answers

Add 42/30 and 90/81

1^st number: 1 12/30, 2^nd number: 1 9/81

42/30 + 90/81 is 113/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 30 × 27 = 810,
   42/30 = 42 × 27/30 × 27 = 1134/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   90/81 = 90 × 10/81 × 10 = 900/810
4. Add the two like fractions:
   1134/810 + 900/810 = 1134 + 900/810 = 2034/810
5. 2034/810 simplified gives 113/45
6. So, 42/30 + 90/81 = 113/45
   In mixed form: 223/45

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