Answers

Add 80/63 and 9/90

1^st number: 1 17/63, 2^nd number: 9/90

80/63 + 9/90 is 863/630.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 90 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 63 × 10 = 630,
   80/63 = 80 × 10/63 × 10 = 800/630
3. Likewise, for the 2nd fraction, since 90 × 7 = 630,
   9/90 = 9 × 7/90 × 7 = 63/630
4. Add the two like fractions:
   800/630 + 63/630 = 800 + 63/630 = 863/630
5. So, 80/63 + 9/90 = 863/630
   In mixed form: 1233/630

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