Answers

Add 70/84 and 90/8

1^st number: 70/84, 2^nd number: 11 2/8

70/84 + 90/8 is 145/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 8 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 84 × 2 = 168,
   70/84 = 70 × 2/84 × 2 = 140/168
3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
   90/8 = 90 × 21/8 × 21 = 1890/168
4. Add the two like fractions:
   140/168 + 1890/168 = 140 + 1890/168 = 2030/168
5. 2030/168 simplified gives 145/12
6. So, 70/84 + 90/8 = 145/12
   In mixed form: 121/12

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