Answers

Add 12/84 and 90/25

1^st number: 12/84, 2^nd number: 3 15/25

12/84 + 90/25 is 131/35.

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,
   12/84 = 12 × 25/84 × 25 = 300/2100
3. Likewise, for the 2nd fraction, since 25 × 84 = 2100,
   90/25 = 90 × 84/25 × 84 = 7560/2100
4. Add the two like fractions:
   300/2100 + 7560/2100 = 300 + 7560/2100 = 7860/2100
5. 7860/2100 simplified gives 131/35
6. So, 12/84 + 90/25 = 131/35
   In mixed form: 326/35

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