\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

a1=-2  d=3an=-2+3(n-2)-2+3(n-2)=9⇒3(n-2)=11⇒n-2=3 2/3⇒n=5 2/3-2+3(n-2)=18⇒3(n-2)=20⇒n-2=6 2/3⇒n=8 2/3-2+3(n-2)=14⇒3(n-2)=16⇒n-2=5 1/3⇒n=7 1/3-2+3(n-2)=7⇒3(n-2)=9⇒n-2=3⇒n=5Членом является число 7