Answers

Add 80/7 and 84/63

1^st number: 11 3/7, 2^nd number: 1 21/63

80/7 + 84/63 is 268/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 63 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 7 × 9 = 63,
   80/7 = 80 × 9/7 × 9 = 720/63
3. Likewise, for the 2nd fraction, since 63 × 1 = 63,
   84/63 = 84 × 1/63 × 1 = 84/63
4. Add the two like fractions:
   720/63 + 84/63 = 720 + 84/63 = 804/63
5. 804/63 simplified gives 268/21
6. So, 80/7 + 84/63 = 268/21
   In mixed form: 1216/21

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