Answers

Add 45/12 and 56/80

1^st number: 3 9/12, 2^nd number: 56/80

45/12 + 56/80 is 89/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 80 is 240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 240
2. For the 1st fraction, since 12 × 20 = 240,
   45/12 = 45 × 20/12 × 20 = 900/240
3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
   56/80 = 56 × 3/80 × 3 = 168/240
4. Add the two like fractions:
   900/240 + 168/240 = 900 + 168/240 = 1068/240
5. 1068/240 simplified gives 89/20
6. So, 45/12 + 56/80 = 89/20
   In mixed form: 49/20

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