Answers

Add 90/35 and 28/81

1^st number: 2 20/35, 2^nd number: 28/81

90/35 + 28/81 is 1654/567.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 81 is 2835
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2835
2. For the 1st fraction, since 35 × 81 = 2835,
   90/35 = 90 × 81/35 × 81 = 7290/2835
3. Likewise, for the 2nd fraction, since 81 × 35 = 2835,
   28/81 = 28 × 35/81 × 35 = 980/2835
4. Add the two like fractions:
   7290/2835 + 980/2835 = 7290 + 980/2835 = 8270/2835
5. 8270/2835 simplified gives 1654/567
6. So, 90/35 + 28/81 = 1654/567
   In mixed form: 2520/567

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