Answers

Add 90/84 and 10/12

1^st number: 1 6/84, 2^nd number: 10/12

90/84 + 10/12 is 40/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 12 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   90/84 = 90 × 1/84 × 1 = 90/84
3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
   10/12 = 10 × 7/12 × 7 = 70/84
4. Add the two like fractions:
   90/84 + 70/84 = 90 + 70/84 = 160/84
5. 160/84 simplified gives 40/21
6. So, 90/84 + 10/12 = 40/21
   In mixed form: 119/21

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