Answers

Add 49/28 and 12/80

1^st number: 1 21/28, 2^nd number: 12/80

49/28 + 12/80 is 19/10.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 28 × 20 = 560,
   49/28 = 49 × 20/28 × 20 = 980/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   12/80 = 12 × 7/80 × 7 = 84/560
4. Add the two like fractions:
   980/560 + 84/560 = 980 + 84/560 = 1064/560
5. 1064/560 simplified gives 19/10
6. So, 49/28 + 12/80 = 19/10
   In mixed form: 19/10

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