Answers

Add 28/63 and 90/80

1^st number: 28/63, 2^nd number: 1 10/80

28/63 + 90/80 is 113/72.

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,
   28/63 = 28 × 80/63 × 80 = 2240/5040
3. Likewise, for the 2nd fraction, since 80 × 63 = 5040,
   90/80 = 90 × 63/80 × 63 = 5670/5040
4. Add the two like fractions:
   2240/5040 + 5670/5040 = 2240 + 5670/5040 = 7910/5040
5. 7910/5040 simplified gives 113/72
6. So, 28/63 + 90/80 = 113/72
   In mixed form: 141/72

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