Answers

Add 90/63 and 84/80

1^st number: 1 27/63, 2^nd number: 1 4/80

90/63 + 84/80 is 347/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 80 is 5040
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5040
2. For the 1st fraction, since 63 × 80 = 5040,
   90/63 = 90 × 80/63 × 80 = 7200/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   84/80 = 84 × 63/80 × 63 = 5292/5040
4. Add the two like fractions:
   7200/5040 + 5292/5040 = 7200 + 5292/5040 = 12492/5040
5. 12492/5040 simplified gives 347/140
6. So, 90/63 + 84/80 = 347/140
   In mixed form: 267/140

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