Answers

Add 80/63 and 20/18

1^st number: 1 17/63, 2^nd number: 1 2/18

80/63 + 20/18 is 50/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 18 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 63 × 2 = 126,
   80/63 = 80 × 2/63 × 2 = 160/126
3. Likewise, for the 2nd fraction, since 18 × 7 = 126,
   20/18 = 20 × 7/18 × 7 = 140/126
4. Add the two like fractions:
   160/126 + 140/126 = 160 + 140/126 = 300/126
5. 300/126 simplified gives 50/21
6. So, 80/63 + 20/18 = 50/21
   In mixed form: 28/21

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