Question

Determinati x €Z astfel încât 17 supra 2x-3 sa fie nr intreg. Dau coronita... Ajutorrrrr

Answer 1

17/(2x-3)  ∈ Z
=> 2x-3 ∈D17={-17,-1,1,17}
2x-3=-17 => 2x=-14 => x=-7
2x-3=-1 => 2x=2 => x=1
2x-3=1 => 2x=4 => x=2
2x-3=17 => 2x=20 => x=10
x ∈{-7,1,2,10}