Answers

Add 90/84 and 80/7

1^st number: 1 6/84, 2^nd number: 11 3/7

90/84 + 80/7 is 25/2.

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,
   90/84 = 90 × 1/84 × 1 = 90/84
3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
   80/7 = 80 × 12/7 × 12 = 960/84
4. Add the two like fractions:
   90/84 + 960/84 = 90 + 960/84 = 1050/84
5. 1050/84 simplified gives 25/2
6. So, 90/84 + 80/7 = 25/2
   In mixed form: 121/2

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