Answers

Add 90/50 and 40/21

1^st number: 1 40/50, 2^nd number: 1 19/21

90/50 + 40/21 is 389/105.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 50 and 21 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 21 × 50 = 1050,
   40/21 = 40 × 50/21 × 50 = 2000/1050
4. Add the two like fractions:
   1890/1050 + 2000/1050 = 1890 + 2000/1050 = 3890/1050
5. 3890/1050 simplified gives 389/105
6. So, 90/50 + 40/21 = 389/105
   In mixed form: 374/105

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