Answers

Add 18/81 and 42/10

1^st number: 18/81, 2^nd number: 4 2/10

18/81 + 42/10 is 199/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 10 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 81 × 10 = 810,
   18/81 = 18 × 10/81 × 10 = 180/810
3. Likewise, for the 2nd fraction, since 10 × 81 = 810,
   42/10 = 42 × 81/10 × 81 = 3402/810
4. Add the two like fractions:
   180/810 + 3402/810 = 180 + 3402/810 = 3582/810
5. 3582/810 simplified gives 199/45
6. So, 18/81 + 42/10 = 199/45
   In mixed form: 419/45

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