Answers

Add 90/56 and 20/84

1^st number: 1 34/56, 2^nd number: 20/84

90/56 + 20/84 is 155/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 84 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 56 × 3 = 168,
   90/56 = 90 × 3/56 × 3 = 270/168
3. Likewise, for the 2nd fraction, since 84 × 2 = 168,
   20/84 = 20 × 2/84 × 2 = 40/168
4. Add the two like fractions:
   270/168 + 40/168 = 270 + 40/168 = 310/168
5. 310/168 simplified gives 155/84
6. So, 90/56 + 20/84 = 155/84
   In mixed form: 171/84

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