Answers

Add 9/20 and 63/80

9/20 + 63/80 is 99/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 20 × 4 = 80,
   9/20 = 9 × 4/20 × 4 = 36/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   63/80 = 63 × 1/80 × 1 = 63/80
4. Add the two like fractions:
   36/80 + 63/80 = 36 + 63/80 = 99/80
5. So, 9/20 + 63/80 = 99/80
   In mixed form: 119/80

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