Answers

Add 90/54 and 42/20

1^st number: 1 36/54, 2^nd number: 2 2/20

90/54 + 42/20 is 113/30.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 20 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 54 × 10 = 540,
   90/54 = 90 × 10/54 × 10 = 900/540
3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
   42/20 = 42 × 27/20 × 27 = 1134/540
4. Add the two like fractions:
   900/540 + 1134/540 = 900 + 1134/540 = 2034/540
5. 2034/540 simplified gives 113/30
6. So, 90/54 + 42/20 = 113/30
   In mixed form: 323/30

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