Answers

Add 70/84 and 72/27

1^st number: 70/84, 2^nd number: 2 18/27

70/84 + 72/27 is 7/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 27 is 756
   
   Next, find the equivalent fraction of both fractional numbers with denominator 756
2. For the 1st fraction, since 84 × 9 = 756,
   70/84 = 70 × 9/84 × 9 = 630/756
3. Likewise, for the 2nd fraction, since 27 × 28 = 756,
   72/27 = 72 × 28/27 × 28 = 2016/756
4. Add the two like fractions:
   630/756 + 2016/756 = 630 + 2016/756 = 2646/756
5. 2646/756 simplified gives 7/2
6. So, 70/84 + 72/27 = 7/2
   In mixed form: 31/2

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