Answers

Add 90/56 and 18/28

1^st number: 1 34/56, 2^nd number: 18/28

90/56 + 18/28 is 9/4.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 28 is 56
   
   Next, find the equivalent fraction of both fractional numbers with denominator 56
2. For the 1st fraction, since 56 × 1 = 56,
   90/56 = 90 × 1/56 × 1 = 90/56
3. Likewise, for the 2nd fraction, since 28 × 2 = 56,
   18/28 = 18 × 2/28 × 2 = 36/56
4. Add the two like fractions:
   90/56 + 36/56 = 90 + 36/56 = 126/56
5. 126/56 simplified gives 9/4
6. So, 90/56 + 18/28 = 9/4
   In mixed form: 21/4

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