Answers

Add 1/63 and 90/80

1^st number: 1/63, 2^nd number: 1 10/80

1/63 + 90/80 is 575/504.

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,
   1/63 = 1 × 80/63 × 80 = 80/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   90/80 = 90 × 63/80 × 63 = 5670/5040
4. Add the two like fractions:
   80/5040 + 5670/5040 = 80 + 5670/5040 = 5750/5040
5. 5750/5040 simplified gives 575/504
6. So, 1/63 + 90/80 = 575/504
   In mixed form: 171/504

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