Answers

Add 90/54 and 18/70

1^st number: 1 36/54, 2^nd number: 18/70

90/54 + 18/70 is 202/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 70 is 1890
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1890
2. For the 1st fraction, since 54 × 35 = 1890,
   90/54 = 90 × 35/54 × 35 = 3150/1890
3. Likewise, for the 2nd fraction, since 70 × 27 = 1890,
   18/70 = 18 × 27/70 × 27 = 486/1890
4. Add the two like fractions:
   3150/1890 + 486/1890 = 3150 + 486/1890 = 3636/1890
5. 3636/1890 simplified gives 202/105
6. So, 90/54 + 18/70 = 202/105
   In mixed form: 197/105

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