Answers

Add 70/28 and 45/80

1^st number: 2 14/28, 2^nd number: 45/80

70/28 + 45/80 is 49/16.

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,
   70/28 = 70 × 20/28 × 20 = 1400/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   45/80 = 45 × 7/80 × 7 = 315/560
4. Add the two like fractions:
   1400/560 + 315/560 = 1400 + 315/560 = 1715/560
5. 1715/560 simplified gives 49/16
6. So, 70/28 + 45/80 = 49/16
   In mixed form: 31/16

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