Answers

Add 12/84 and 70/50

1^st number: 12/84, 2^nd number: 1 20/50

12/84 + 70/50 is 54/35.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 50 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 50 × 42 = 2100,
   70/50 = 70 × 42/50 × 42 = 2940/2100
4. Add the two like fractions:
   300/2100 + 2940/2100 = 300 + 2940/2100 = 3240/2100
5. 3240/2100 simplified gives 54/35
6. So, 12/84 + 70/50 = 54/35
   In mixed form: 119/35

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