Question

Не могу решить срочно !!!

Answer 1

2.74
[(3n+6)-7]/(n+2)=3- 7/(n+2)
n+2=7⇒n=5
n+2=-7⇒n=-9
Ответ n=5,n=-9
2.75
(3n²-16n+21)/(n-3)=3n-7
3n-7>0
3n>7
n>2 1/3
n={3,3,5,...}