Answers

Add 12/84 and 90/7

1^st number: 12/84, 2^nd number: 12 6/7

12/84 + 90/7 is 13/1.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 7 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   12/84 = 12 × 1/84 × 1 = 12/84
3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
   90/7 = 90 × 12/7 × 12 = 1080/84
4. Add the two like fractions:
   12/84 + 1080/84 = 12 + 1080/84 = 1092/84
5. 1092/84 simplified gives 13/1
6. So, 12/84 + 90/7 = 13/1

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