Answers

Add 80/63 and 9/70

1^st number: 1 17/63, 2^nd number: 9/70

80/63 + 9/70 is 881/630.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 70 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 70 × 9 = 630,
   9/70 = 9 × 9/70 × 9 = 81/630
4. Add the two like fractions:
   800/630 + 81/630 = 800 + 81/630 = 881/630
5. So, 80/63 + 9/70 = 881/630
   In mixed form: 1251/630

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