Answers

Add 90/35 and 20/54

1^st number: 2 20/35, 2^nd number: 20/54

90/35 + 20/54 is 556/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 35 and 54 is 1890
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1890
2. For the 1st fraction, since 35 × 54 = 1890,
   90/35 = 90 × 54/35 × 54 = 4860/1890
3. Likewise, for the 2nd fraction, since 54 × 35 = 1890,
   20/54 = 20 × 35/54 × 35 = 700/1890
4. Add the two like fractions:
   4860/1890 + 700/1890 = 4860 + 700/1890 = 5560/1890
5. 5560/1890 simplified gives 556/189
6. So, 90/35 + 20/54 = 556/189
   In mixed form: 2178/189

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