Answers

Add 45/7 and 70/80

1^st number: 6 3/7, 2^nd number: 70/80

45/7 + 70/80 is 409/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 80 is 560
   
   Next, find the equivalent fraction of both fractional numbers with denominator 560
2. For the 1st fraction, since 7 × 80 = 560,
   45/7 = 45 × 80/7 × 80 = 3600/560
3. Likewise, for the 2nd fraction, since 80 × 7 = 560,
   70/80 = 70 × 7/80 × 7 = 490/560
4. Add the two like fractions:
   3600/560 + 490/560 = 3600 + 490/560 = 4090/560
5. 4090/560 simplified gives 409/56
6. So, 45/7 + 70/80 = 409/56
   In mixed form: 717/56

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