Answers

Add 70/12 and 50/21

1^st number: 5 10/12, 2^nd number: 2 8/21

70/12 + 50/21 is 115/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   70/12 = 70 × 7/12 × 7 = 490/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   50/21 = 50 × 4/21 × 4 = 200/84
4. Add the two like fractions:
   490/84 + 200/84 = 490 + 200/84 = 690/84
5. 690/84 simplified gives 115/14
6. So, 70/12 + 50/21 = 115/14
   In mixed form: 83/14

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