Answers

Add 90/50 and 28/42

1^st number: 1 40/50, 2^nd number: 28/42

90/50 + 28/42 is 37/15.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 42 is 1050
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1050
2. For the 1st fraction, since 50 × 21 = 1050,
   90/50 = 90 × 21/50 × 21 = 1890/1050
3. Likewise, for the 2nd fraction, since 42 × 25 = 1050,
   28/42 = 28 × 25/42 × 25 = 700/1050
4. Add the two like fractions:
   1890/1050 + 700/1050 = 1890 + 700/1050 = 2590/1050
5. 2590/1050 simplified gives 37/15
6. So, 90/50 + 28/42 = 37/15
   In mixed form: 27/15

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