Answers

Add 7/72 and 63/80

7/72 + 63/80 is 637/720.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 72 × 10 = 720,
   7/72 = 7 × 10/72 × 10 = 70/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   63/80 = 63 × 9/80 × 9 = 567/720
4. Add the two like fractions:
   70/720 + 567/720 = 70 + 567/720 = 637/720
5. So, 7/72 + 63/80 = 637/720

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