Answers

Add 90/84 and 9/25

1^st number: 1 6/84, 2^nd number: 9/25

90/84 + 9/25 is 501/350.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 25 is 2100
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2100
2. For the 1st fraction, since 84 × 25 = 2100,
   90/84 = 90 × 25/84 × 25 = 2250/2100
3. Likewise, for the 2nd fraction, since 25 × 84 = 2100,
   9/25 = 9 × 84/25 × 84 = 756/2100
4. Add the two like fractions:
   2250/2100 + 756/2100 = 2250 + 756/2100 = 3006/2100
5. 3006/2100 simplified gives 501/350
6. So, 90/84 + 9/25 = 501/350
   In mixed form: 1151/350

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