Answers

Add 54/8 and 21/80

1^st number: 6 6/8, 2^nd number: 21/80

54/8 + 21/80 is 561/80.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 80 is 80
   
   Next, find the equivalent fraction of both fractional numbers with denominator 80
2. For the 1st fraction, since 8 × 10 = 80,
   54/8 = 54 × 10/8 × 10 = 540/80
3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
   21/80 = 21 × 1/80 × 1 = 21/80
4. Add the two like fractions:
   540/80 + 21/80 = 540 + 21/80 = 561/80
5. So, 54/8 + 21/80 = 561/80
   In mixed form: 71/80

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